1. Hisoblang: (
)
7
10
)(
7
10
#1 10 #2 3 #3 7 #4 -7 #5
70
2. Hisoblang:
225
01
,
0
196
#1 21 #2 1,4 #3 1,5 #4 210 #5 TJY
3. Tenglamani yeching:
x
x
7
)
7
(
2
#1
#2 x
7
#3 x
7
#4 x
7
#5 x
7
4. x
2
+5x-6=0 kvadrat tenglamani kichik ildizini katta ildiziga nisbatini toping
#1 6#2 -6#3 #4 - #5 1
5. x
2
-px+8=0 tenglamaning ildizlaridan biri 4 ga teng.Bu tenglamaning barcha koyeffitsiyentlari yigindisini toping
#1 3#2 2#3 15#4 14#5 4
6. m ning qanday qiymatlarida x
2
-4mx+48=0 tenglamaning ildizlaridan biri bosh qasidan 3 marta kichik bo'ladi?
#1 2#2 -4;4#3 -3;3 #4 4 #5 -2;2
7.
=0 tenglamani yeching
#1 1#2 1; #3 #4 5#5
8.Tenglamani yeching: x
2
=64
#1 x
1,2
=
8
#2 x=8 #3 x=-8 #4 x=32 #5
9. Tenglamani yeching: x
2
+9x=0
#1 x
1,2
= -9 #2 x
1,2
=
3
#3 x
1,2
=9 #4 x
1
=9, x
2
=0 #5 x
1
=0, x
2
= -9
10. Kvadrat tenglamani yeching: x
2
-7x+10=0
#1 x
1
=-2, x
2
=2 #2 x
1
=-5, x
2
=2 #3 x
1
=5, x
2
=1 #4 x
1
=2, x
2
=5 #5 TJY
11. x
2
+6x+q=0 kvadrat tenglamaning x
1
va x
2
ildizlari x
2
=2x
1
shartni qanoatlantiradi.Ildizlari yig’indisini toping
#1 8 #2 -2 #3 -4 #4 -6 #5 10
12. x
2
+px+3=0 kvadrat tenglamaning x
1
va x
2
ildizlari x
2
=3x
1
shartni qanoatlantiradi. x
2
ni toping
#1
#2
#3
#4 10 #5 3
13. 3x
2
-8x-15=0 tenglama berilgan.x
1
va x
2
ildizlari bo’lsa
ni toping
#1 - #2 17 #3 3 #4 32 #5
14. ax
2
+bx+c=0, a,b , c berilgan sonlar ,a
, x esa noma’lum ko’rinishidagi tenglama…tenglama deyiladi
#1 Bikvadrat #2 kvadrat #3 chiziqli #4 trigonometrik #5 kasr-ratsional
15. ax
4
+bx+c=0, a,b , c berilgan sonlar ,a
, x esa noma’lum ko’rinishidagi tenglama…tenglama deyiladi
#1 Bikvadrat #2 kvadrat #3 chiziqli #4 trigonometrik #5 kasr-ratsional
16. Ildizlari 10 va -2 bo’lgan kvadrat tenglama tuzing:
#1 x
2
-8x-20=0, #2 x
2
-12x+32=0 #3 x
2
-4x-5=0 #4 x
2
+7x+12=0 #5 x
2
-2x-15=0
17. Ildizlari 5 va -3 bo’lgan kvadrat tenglama tuzing:
#1 x
2
-8x-20=0, #2 x
2
-12x+32=0 #3 x
2
-4x-5=0 #4 x
2
+7x+12=0 #5 x
2
-2x-15=0
18. Kvadrat uchhadni ko’paytuvchilarga ajrating: 2x
2
-x-1
#1 (x-2)(x-3) #2 (x-1)(x+5) #3 (x-3)(x+8) #4 (x+0,5)(x-1) #5 (x+7)(x-6)
19. x
2
+5x-6=0 kvadrat tenglamani ildizlari ko’paytmasini toping
20. x
2
-px+8=0 tenglamaning ildizlaridan biri 4 ga teng.Bu tenglamaning ikkinchi ildizini toping
21. 2x
2
+x-a=0 tenglamaning ildizlaridan biri 2 ga teng. Bu tenglamaning barcha koyeffitsiyentlari yig’indisini
toping
22. p ning qanday qiymatlarida x
2
+px+15 =0 tenglamaning ildizlaridan biri 3 ga teng bo'ladi?
23. x
2
+2x+1=0 tenglamaning ildizlari x
1
va x
2
bo'lsa
+
ni hisoblang
24. Tenglamani yeching: (x-1)
4
-5(x-1)
2
+4=0
25. Kasrni qisqartiring:
Algebra VIII-sinf.III chorak testi. D-variant
1. Ifodani soddalashtiring: 12
2
1
7
2
120
2
1
6
5
#1
30
#2 3
30
#3 2
30
#4 10,5 #5 to’g’ri javob yo’q
2. Ifodani soddalashtiring: (3
)
2
2
(
:
)
50
2
,
0
18
9
8
#1 -10 #2 10 #3 10
2
#4 -10
2
#5
2
10
3. Hisoblang:
20
5
5
20
4
4
#1 1 #2
20
2
9
9
#3
29
9
#4 2 #5 9
4. x
1
va x
2
x
2
+x-5 tenglamaning ildizlari ekanligi ma'lum.
+
ning qiymatini toping.
#1 10#2 12#3 11#4 9#5 8
5. x
2
+px+q
2
=0 (q 0) tenglama ning qanday qiymatlarida haqiqiy ildizlarga ega emas?
#1 [0;2]#2 (0;2]#3 [-2;2]#4 (-2;0) #5 (-2;2)
6. x
2
+2x+1=0 tenglamaning ildizlari x
1
va x
2
bo'lsa
-
ni hisoblang
#1 1#2 3#3 4 #4 0 #5 -2
7. y
4
-2y
2
-8=0 tenglamaning haqiqiy ildizlari ko'paytmasini aniqlang.
#1 4#2 16#3 -16 #4 -4 #5 64
8. Tenglamani yeching: x
2
-11=0. #1 x=
11
#2 x
1,2
=
11
#3 x=-
11
#4 x=
2
11
#5 TJY
9. Kvadrat tenglamani yeching: x
2
+x-6=0
#1 x
1
=-3, x
2
=2 #2 x
1
=3, x
2
= -2 #3 x
1,2
=
6
#4 x
1
=-2, x
2
= -3 #5 x
1,2
=
3
10. x
2
+6x+q=0 kvadrat tenglamaning x
1
va x
2
ildizlari x
2
=2x
1
shartni qanoatlantiradi.q ni toping
#1 8 #2 -2 #3 -4 #4 -6 #5 10
11. x
2
+6x+q=0 kvadrat tenglamaning x
1
va x
2
ildizlari x
2
=2x
1
shartni qanoatlantiradi.Ildizlari ko’paytmasini toping
#1 8 #2 -2 #3 -4 #4 -6 #5 10
12. x
2
+px+3=0 kvadrat tenglamaning x
1
va x
2
ildizlari x
2
=3x
1
shartni qanoatlantiradi. Ildizlari yig’indisini toping
#1
#2
#3
#4 10 #5 3
13. 3x
2
-8x-15=0 tenglama berilgan.x
1
va x
2
ildizlari bo’lsa
ni toping
#1 - #2 17 #3 3 #4 32 #5
14. Umumiy kvadrat tenglama ildizlari formulasini toping:
#1 x=0 #2 x
1,2
=
#3
#4
#5 x= -
15. x
2
+px+q=0, p,q berilgan sonlar , x esa noma’lum ko’rinishidagi tenglama…tenglama deyiladi
#1 Bikvadrat #2 kvadrat #3 chiziqli #4 keltirilgan kvadrat #5 kasr-ratsional
16. Ildizlari 4 va 8 bo’lgan kvadrat tenglama tuzing:
#1 x
2
-8x-20=0, #2 x
2
-12x+32=0 #3 x
2
-4x-5=0 #4 x
2
+7x+12=0 #5 x
2
-2x-15=0
17. Kvadrat uchhadni ko’paytuvchilarga ajrating: x
2
-5x+6
#1 (x-2)(x-3) #2 (x-1)(x+5) #3 (x-3)(x+8) #4 (x+0,5)(x-1) #5 (x+7)(x-6)
18. Kvadrat uchhadni ko’paytuvchilarga ajrating: x
2
+x-42
#1 (x-2)(x-3) #2 (x-1)(x+5) #3 (x-3)(x+8) #4 (x+0,5)(x-1) #5 (x+7)(x-6)
19. x
2
+5x-6=0 kvadrat tenglamani kichik ildizini katta ildiziga nisbatiga qarama-qarshi sonni toping
20. x
2
-px+8=0 tenglamaning ildizlaridan biri 4 ga teng.Bu tenglamaning kata ildizini kichik ildiziga nisbatini toping
21. 2x
2
+x-a=0 tenglamaning ildizlaridan biri 2 ga teng. Bu tenglamaning kata ildizini kichik ildiziga nisbatini
toping
22. p ning qanday qiymatlarida x
2
+px+15 =0 tenglamaning ildizlaridan biri 15 ga teng bo'ladi?
23. x
2
+2x+1=0 tenglamaning ildizlari x
1
va x
2
bo'lsa x
1
+x
2
ni hisoblang
24. (x-1)
4
-5(x-1)
2
+4=0 tenglamaning ildizlari yig’indisini toping:
25. Kasrni qisqartiring:
Algebra VIII-sinf.IV-chorak test.A-variant
1.Sonning aniq qiymati 1,483, taqribiy qiymati 1,48 bo’lsa,yaqinlashish xatoligini toping:
#1 0,003 #2 0,007 #3 1,005 #4 - 0,007 #5 0,002
2.Sonning aniq qiymati 1,283, taqribiy qiymati 1,281 bo’lsa,yaqinlashish xatoligini toping:
#1 0,003 #2 0,007 #3 1,005 #4 - 0,007 #5 0,002
3. Sonning aniq qiymati , taqribiy qiymati bo’lsa,yaqinlashish absolyut xatoligini toping:
#1
4. Qo’sh tengsizlik ko’rinishida yozing: a= -1,8
0,4
#1 -2 5
,
1
a
#3 -2,2
4
,
1
a
#4 -2,3
3
,
1
a
#5 -2,4
5. Qo’sh tengsizlik ko’rinishida yozing: a=2,61
0,01
#1 2,7 a 2,72 #2 2,662
,
2
#3 2,9
#4 2,2
22
,
2
a
#5 1,99 a
6. ni 0,01 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,13 #2 0,32 #3 0,42 #4 0,47 #5 0,53
7. ni 0,01 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,13 #2 0,32 #3 0,42 #4 0,47 #5 0,53
8. ni 0,001 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,357 #2 0,214 #3 0,643 #4 0,308 #5 0,185
9. Xonaning uzunligi (10
0,02) m ga teng.O’lchashning nisbiy xatoligini aniqlang:
#1 4% #2 5% #3 2% #4 8% #5 1,25%
10. Ikki qishloq orasidagi masofa (100
2)km ga teng. O’lchashning nisbiy xatoligini aniqlang:
#1 1% #2 2% #3 3% #4 4% #5 5%
11. Sonni yuzdan birgacha yaxlitlang.Yaxlitlashning nisbiy xatoligini toping: 5,7635
#1 5,76; 0,061% #2 4,46; 0,078% #3 3,71; 0,094% #4 2,16; 0,139% #5 2,29; 0,179%
12. Sonni yuzdan birgacha yaxlitlang.Yaxlitlashning nisbiy xatoligini toping: 1,093
#1 5,76; 0,061% #2 4,46; 0,078% #3 3,71; 0,094% #4 2,16; 0,139% #5 2,29; 0,179%
13. Kvadrat tenglamani yeching: 6x
2
-5x+1=0
#1 x
1
=0, x
2
= - #2 x= #3 x
1
= -
#4 x= - #5 x
1
=
14. Tenglamalar sistemasini yeching: x+y=5
xy=4
#1 x= -4, y= -1 #2 x= 1 , y= -1 #3 x=4, y= -1 #4 (1;4) va (4;1) #5
15. Ikki sonning ayirmasi 3 ga , ularning ko’paytmasi 28 ga teng.Shu sonlardan kattasini toping.
#1 8 #2 4 #3 7 #4 11 #5 65
16. To’g’ri to’rtburchakning perimetri 30 m ga, yuzi esa 56 m
2
ga teng .Uning bo’yini toping.
#1 5 #2 6 #3 3 #4 8 #5 1
17. Tenglamani yeching: x
2
=7
#1 x=
#2 x=
#3 x=0, x= -5 #4 x=0, x=8 #5 x=0, x= 12
18. Tenglamani yeching: x
2
=12x
#1 x=
#2 x=
#3 x=0, x= -5 #4 x=0, x=8 #5 x=0, x= 12
19. Tenglamani yeching:
20. Tenglamani yeching: x
2
-1,8x-3,6=0
21. Tenglamani yeching: 2x
2
+x-3=0
22. Tenglamani yeching: 2(x-2)(x+2)=0
23. Tenglamani yeching:
24. Tenglamani yeching: x
2
+20x+100=0
25. Bronza tayyorlash uchun 17 qism mis, 2 qism rux va bir qism qalayi olinadi. 400 kg bronza olish uchun
yuqoridagi metallarning har biridan qanchadan olish kerak?
Algebra VIII-sinf.IV-chorak test.B-variant
1.Sonning aniq qiymati 1,387, taqribiy qiymati 1,38 bo’lsa,yaqinlashish xatoligini toping:
#1 0,003 #2 0,007 #3 1,005 #4 - 0,007 #5 0,002
2. Sonning aniq qiymati , taqribiy qiymati bo’lsa,yaqinlashish xatoligini toping:
#1
3. Sonning aniq qiymati , taqribiy qiymati bo’lsa,yaqinlashish absolyut xatoligini toping:
#1
4. Qo’sh tengsizlik ko’rinishida yozing: a= -1,8
0,5
#1 -2 5
,
1
a
#3 -2,2
4
,
1
a
#4 -2,3
3
,
1
a
#5 -2,4
5. Qo’sh tengsizlik ko’rinishida yozing: a=2,91
0,01
#1 2,7 a 2,72 #2 2,662
,
2
#3 2,9
#4 2,2
22
,
2
a
#5 1,99 a
6. ni 0,01 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,13 #2 0,32 #3 0,42 #4 0,47 #5 0,53
7. ni 0,001 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,357 #2 0,214 #3 0,643 #4 0,308 #5 0,185
8. ni 0,001 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,357 #2 0,214 #3 0,643 #4 0,308 #5 0,185
9. Xonaning uzunligi (5
0,04) m ga teng.O’lchashning nisbiy xatoligini aniqlang:
#1 4% #2 5% #3 2% #4 8% #5 1,25%
10. Ikki qishloq orasidagi masofa (100
3)km ga teng. O’lchashning nisbiy xatoligini aniqlang:
#1 1% #2 2% #3 3% #4 4% #5 5%
11. Sonni yuzdan birgacha yaxlitlang.Yaxlitlashning nisbiy xatoligini toping: 4,4635
#1 5,76; 0,061% #2 4,46; 0,078% #3 3,71; 0,094% #4 2,16; 0,139% #5 2,29; 0,179%
12. Sonni o’ndan birgacha yaxlitlang.Yaxlitlashning nisbiy xatoligini toping: 2,2941
#1 2,3; 2,6% #2 2,2; 2,5% #3 2,3; 0,3% #4 2,3; 0,4% #5 2,3; 0,26%
13. Kvadrat tenglamani yeching: 12x
2
+7x+1=0
#1 x
1
=
#2 x
1
= -
#3 x
1
=
#4 x= #5 x=
14. Tenglamalar sistemasini yeching: x+y=4
x
2
-y
2
= 8
#1 x= 2, y= -2 #2 x=5, y= -1 #3 x= 4, y=0 #4 x=1, y= 3 #5 x=3, y=1
15. Ikki sonning ayirmasi 3 ga , ularning ko’paytmasi 28 ga teng.Shu sonlar yig’indisini toping.
#1 13 #2 4 #3 7 #4 11 #5 65
16. To’g’ri to’rtburchakning perimetri 30 m ga, yuzi esa 54 m
2
ga teng .Uning enini toping.
#1 5 #2 6 #3 3 #4 8 #5 1
17. Tenglamani yeching: x
2
=11
#1 x=
#2 x=
#3 x=0, x= -5 #4 x=0, x=8 #5 x=0, x= 12
18. Tenglamani yeching: 1,5x-4x
2
=6,3x-x
2
#1 y=
#2 x=0, x= 9 #3 x=0 , x= -10 #4 y=0, y=9 #5 x=0, x= -1,6
19. Tenglamani yeching:
20. Tenglamani yeching: 2x
2
+3x-2=0
21. Tenglamani yeching: 20+8x-x
2
=0
22. Tenglamani ildizi nechta: (x-3)(x-2)=7x-1
23. Tenglamani yeching:
24. Tenglamani yeching: x
2
+18x-208=0
25. Bir maydondan 450 t, yuzi undan 5 ga kam bo’lgan ikkinchi maydondan 400 t kartoshka yig’ishtirib olindi. Agar
ikkinchi maydondagi hosildorlik birinchi maydondagiga qaraganda 2 tonna yuqori bo’lgan bo’lsa, har qaysi
maydonning hosildorligini aniqlang.
Algebra VIII-sinf.IV chorak test.C-variant
1.Sonning aniq qiymati 1,405, taqribiy qiymati 1,4 bo’lsa,yaqinlashish xatoligini toping:
#1 0,003 #2 0,007 #3 1,005 #4 - 0,007 #5 0,002
2. Sonning aniq qiymati , taqribiy qiymati bo’lsa,yaqinlashish absolyut xatoligini toping:
#1
3. Qo’sh tengsizlik ko’rinishida yozing: a= -1,8
0,2
#1 -2 5
,
1
a
#3 -2,2
4
,
1
a
#4 -2,3
3
,
1
a
#5 -2,4
4. Qo’sh tengsizlik ko’rinishida yozing: a= -1,8
0,6
#1 -25
,
1
a
#3 -2,2
4
,
1
a
#4 -2,3
3
,
1
a
#5 -2,4
5. Qo’sh tengsizlik ko’rinishida yozing: a=2,21
0,01
#1 2,7 a 2,72 #2 2,662
,
2
#3 2,9
#4 2,2
22
,
2
a
#5 1,99 a
6. ni 0,01 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,13 #2 0,32 #3 0,42 #4 0,47 #5 0,53
7. ni 0,001 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,357 #2 0,214 #3 0,643 #4 0,308 #5 0,185
8. Xonaning uzunligi (5
0,02) m ga teng.O’lchashning nisbiy xatoligini aniqlang:
#1 4% #2 5% #3 2% #4 8% #5 1,25%
9. Xonaning uzunligi (4
0,05) m ga teng.O’lchashning nisbiy xatoligini aniqlang:
#1 4% #2 5% #3 2% #4 8% #5 1,25%
10. Ikki qishloq orasidagi masofa (100
4)km ga teng. O’lchashning nisbiy xatoligini aniqlang:
#1 1% #2 2% #3 3% #4 4% #5 5%
11. Sonni yuzdan birgacha yaxlitlang.Yaxlitlashning nisbiy xatoligini toping: 3,7135
#1 5,76; 0,061% #2 4,46; 0,078% #3 3,71; 0,094% #4 2,16; 0,139% #5 2,29; 0,179%
12. Sonni standart shaklida yozing: 234,087
#1 2,34087*10
2
#2 23,4087*10 #3 2,4*10
2
#4 23,5*10
2
#5 2,34*10
-2
13. Tenglamani yeching: x
4
-5x
2
+4=0
#1 x
1,2
=
#2 x
1,2
=
#3 x
1
=1, x
2
=4 #4 x
1,2
=
#5
14. Ikki sonning ayirmasi 3 ga , ularning ko’paytmasi 28 ga teng.Shu sonlarni toping.
#1 7 va 4 #2 8 va 5 #3 7 #4 11 #5 65
15. Ikki sonning ayirmasi 3 ga , ularning ko’paytmasi 28 ga teng.Shu sonlar kvadratlari ko’paytmasini toping.
#1 49 #2 4 #3 7 #4 11 #5 65
16. To’g’ri to’rtburchakning perimetri 32 m ga, yuzi esa 55 m
2
ga teng .Uning bo’yi endian qancha uzun.
#1 5 #2 6 #3 3 #4 8 #5 1
17. Tenglamani yeching: x
2
+5x=0
#1 x=
#2 x=
#3 x=0, x= -5 #4 x=0, x=8 #5 x=0, x= 12
18. Tenglamani yeching: 11y-15=(y+5)(y-3)
#1 y=
#2 x=0, x= 9 #3 x=0 , x= -10 #4 y=0, y=9 #5 x=0, x= -1,6
19. Tenglamani yeching: x
2
+6x+5=0
20. Tenglamani yeching: 4x
2
-x-14=0
21. Tenglamani yeching: 2x
2
-9x=35
22. Tenglamani yeching:
23. Tenglamani yeching: x
2
+3x+70=0
24. Tenglamani yeching: x(x-15)=3(108-5x)
25. Oddiy kasrning surati maxrajidan 11 ta kata . Agar shu kasrning suratiga 5, maxrajiga 12 qo’shilsa, berilgan
kasrdan uch marta kichik kasr hosil bo’ladi.Shu kasrni toping.
Algebra VIII-sinf.IV chorak test. D-variant
1.Sonning aniq qiymati 1,453, taqribiy qiymati 1,46 bo’lsa,yaqinlashish xatoligini toping:
#1 0,003 #2 0,007 #3 1,005 #4 - 0,007 #5 0,002
2. Sonning aniq qiymati , taqribiy qiymati bo’lsa,yaqinlashish absolyut xatoligini toping:
#1
3. Qo’sh tengsizlik ko’rinishida yozing: a= -1,8
0,3
#1 -2 5
,
1
a
#3 -2,2
4
,
1
a
#4 -2,3
3
,
1
a
#5 -2,4
4. Qo’sh tengsizlik ko’rinishida yozing: a=2,71
0,01
#1 2,7 a 2,72 #2 2,662
,
2
#3 2,9
#4 2,2
22
,
2
a
#5 1,99 a
5. Qo’sh tengsizlik ko’rinishida yozing: a=2
0,01
#1 2,7 a 2,72 #2 2,662
,
2
#3 2,9
#4 2,2
22
,
2
a
#5 1,99 a
6. ni 0,01 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,13 #2 0,32 #3 0,42 #4 0,47 #5 0,53
7. ni 0,001 gacha aniqlikda o’nli kasr ko’rinishida yozing:
#1 0,357 #2 0,214 #3 0,643 #4 0,308 #5 0,185
8. Xonaning uzunligi (4
0,02) m ga teng.O’lchashning nisbiy xatoligini aniqlang:
#1 4% #2 5% #3 2% #4 8% #5 1,25%
9. Ikki qishloq orasidagi masofa (100
1)km ga teng. O’lchashning nisbiy xatoligini aniqlang:
#1 1% #2 2% #3 3% #4 4% #5 5%
10. Ikki qishloq orasidagi masofa (100
5)km ga teng. O’lchashning nisbiy xatoligini aniqlang:
#1 1% #2 2% #3 3% #4 4% #5 5%
11. Sonni yuzdan birgacha yaxlitlang.Yaxlitlashning nisbiy xatoligini toping: 2,163
#1 5,76; 0,061% #2 4,46; 0,078% #3 3,71; 0,094% #4 2,16; 0,139% #5 2,29; 0,179%
12. Sonni standart shaklida yozing: 0,00000078
#1 7,8*10
7
#2 7,8*10
-7
#3 78*10
-7
#4 0,78*10
-5
#5 0,078*10
5
13. Tenglamani yeching: x
4
-4x
2
-5=0
#1 x
1,2
= -
#2 x
1,2
=5 #3 x
1,2
=
#4 #5 x
1,2
=
14. Ikki sonning ayirmasi 3 ga , ularning ko’paytmasi 28 ga teng.Shu sonlardan kichigini toping.
#1 2 #2 4 #3 7 #4 11 #5 65
15. To’g’ri to’rtburchakning perimetri 30 m ga, yuzi esa 56 m
2
ga teng .Uning bo’yi endian qancha uzun.
#1 5 #2 6 #3 3 #4 8 #5 1
16. To’g’ri to’rtburchakning perimetri 22 m ga, yuzi esa 24 m
2
ga teng .Uning bo’yi endian qancha uzun.
#1 5 #2 6 #3 3 #4 8 #5 1
17. Tenglamani yeching: x
2
=8x
#1 x=
#2 x=
#3 x=0, x= -5 #4 x=0, x=8 #5 x=0, x= 12
18. Tenglamani yeching: 3x(x+2)=2x(x-2)
#1 y=
#2 x=0, x= 9 #3 x=0 , x= -10 #4 y=0, y=9 #5 x=0, x= -1,6
19. Tenglamani yeching: x
2
+3,5x-2=0
20. Tenglamani yeching: x
2
-x-2=0
21. Tenglamani yeching: (x+5)(x-3)=2x-7
22. Tenglamani yeching:
23. Tenglamani yeching: x
2
-12x+11=0
24. Tenglamani yeching: (x-3)
2
+(x+4)
2
-(x-5)
2
=17x+24
25. Sport musobaqalarida VII-sinf o’quvchisi 60 m masofani 9 s da, X-sinf o’quvchisi esa 100 m masofani 14,8 s da
bosib o’tdi. O’quvchilar o’zgarmastezlik bilan chopganlar deb hisoblab, kim tezroq yugurganini aniqlang.
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