1. kasrni qisqartiring. A 0,75 b 3/4a c 3a/4 d -3/4

1. kasrni qisqartiring.

A) 0,75 B) 3/4a C) 3a/4 D) -3/4
2. Kesma 2:5:7 nisbatdagi kesmalarga bo’lingan bo’lib, eng kattasi eng kichigidan 4sm uzun. Berilgan kesma uzunligini toping.
A)10,8 B) 11,4 C) 11,2 D) 14,4
3. 2x²-3+2xa=0 tenglamanining bir ildizi -1 bo`lsa, a ning qiymatini toping
A) -1 B) -2 C) -0,5 D) -2
24. EKUB(72;60)+EKUK(28;20) ning qiymatini toping. A) 119 B) 126 C) 136 D) 140
5. x²-3x+2b+3=0 tenglama ildizlari uchun 5x₁+3x₂=23 tenglik
o’rinli bo’lsa, b ning qiymatini toping.
A)6 B)TJY B)9 C)0
6. x²-4x+p=0 p ning qanday qiymatini ildizlarining kvadratlar yig’indisi 14 ga teng bo’ladi.
A)TJY B)7 C)5 D)9
7. 2x²+ax+3a=0 tenglamaning ildizlaridan biri 3 ga teng bo’lsa, a ning qiymatini toping
A)0 B)7 C)6 D)TJY
8. x²-(a+3)x+a²=0 a ning qanday qiymatida tenglamaning bir ildizi 3 ga teng
JAVOB____________________
9. x²-2x+q=0 tenglamaning ildizlari orasida 2x₁+x₂=3 munosabat o’rinli bo’lsa q ning qiymatini toping.
JAVOB________________________
10. x²+px+1=0 tenglamaning ildizlaridan biri 4 ga teng p ning qiymatini toping
JAVOB____________________________
11. x²+px+12=0 tenglamaning ildizlari x₁ va x₂ uchun x₁-x₂=1 munosabat o’rinli p ning qiymatini toping.
JAVOB_____________________________
12. 5x²-kx+1=0 tenglama ildizlarining ayirmasi 1 ga teng k ning qiymatini toping.
JAVOB_________________________
13. x2-3ax+a²=0 tenglamaning ildizlari uchun x₁²+x₂²=1,75 munosabat o’rinli a ning qiymatini toping.
JAVOB_________________________________
14. x²-12x+q=0 tenglamaning ildizlaridan biri ikkinchisidan 3 marta katta. Bu tenglamaning ozod hadini toping JAVOB______________________
15. x²-15x+q=0 tenglamaning ildizlaridan biri boshqasidan 4 marta kichik uning ozod hadini toping
JAVOB_____________________________
16. -(a+2)x+4=0 va tenglamaning ildizlari bo’lsa =3 tenglik o’rinlibo’lsa a ni toping A)0 B)1 C)2 D)3
17. + - - soddalashtiring
A)12 B)TJY C)0 D)8
18. (x+2)²-3(x+2)-5=0 tenglama ildizlari yig`indisini toping A) -3 B) 3 C) -1 D) 1 E) 2
19. x²-6x+m+2=0 tenglama ildizlaridan biri 2 bo`lsa, m ning qiymatini toping A) 7 B) 6 C) 18 D) 16 E) 34
20. x²-5x+a+1=0 tenglama ildizlari x₁ va x₂ bo`lsa, 2x₁+x₂=6 tenglikdan a ning qiymatini toping.
A) -2 B) 3 C) 4 D) 5 E) -3
21. Rasmdanfoydalanib ningqiymatini toping


A) B) C) D)
22. Agar bo’lsa, ifodaningqiymatinitoping:
A) 10 B) 0,1 C) 20 D) 0,2
23. Yig’indini hisoblang:
+ + + + .....+
A) B) C) D)
24. Agar t³-10=0 bo’lsa ni t orqali ifodalang. A) t+3 B)t+2 C)t-2 D)t-3
25. nisoddalashtiring. A) 5 B) 4 C) 6 D) 7
26.Tenglamaning natural sonlardagi yechimida x+y+z ning uchlanganining yarmini toping.
A)12 B)36 C18 D)T.J.y

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