1. Agar x+y=6 va x+z=2 bo’lsa x


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Test 2

1. Agar x+y=6 va x+z=2 bo’lsa x2+xy+xz+yz ning qiymatini toping.

A)18 B)15 C)12 D)10

2. 134+264+394 sonning bo’luvchisini toping.

A)15 B)23 C)49 D)51

3. Agar 7a juft son bo’lsa quyidagilardan qaysi biri doimo toq.

A) 3a+4 B) 5a2-2 C) 33a-4 D) 7a-3

4. 20 dan katta va 30 dan kichkina bo’lgan raqamlari yig’indisiga bo’linadigan sonlar yig’indisini toping.

A)71 B)72 C)73 D)63

5. Quyidagi mulohazalardan nechtasi noto’g’ri?

1) Manfiy son xar qanday manfiy darajada manfiydir

2) Nolning xar qanday darajasi nolga teng

3) Nol ratsional sondir

4) Musbat son xar qanday manfiy darajada musbatdir

A)1 B)2 C)3 D)4

6. kasrni qisqartiring.

A)10-3a+2b B)10-3a-2b C)10-2a+3b D)10-2a-3b

7. Agar =A bo’lsa A+8 nechiga teng?

A)4 B)8 C)12 D)15

8. Agar bo’linma x-5 ga, bo’luvchi x-7 ga, qoldiq -7 ga teng bo’lsa, bo’linuvchini toping.

A)x2-12x-42 B)x2+12x-42 C)x2-12x+28 D)x2-12x-28

9. (x-1)(x+1)(x2+1)(x4+1)

A)x6+1 B)x6-1 C)x8+1 D)x8-1

10. Hisoblang.

A) B)0 C) D)

11. Soddalashtiring .

A)22n+3 B)4n C)4n+2 D)22n-1

12. (x-2)(1-x)+(x-3)2 ko’phadni standart shakliga keltiring.

A)3x2-3x+7 B)7-3x C)3x+9 D)x-7

13. a(b-c+bc)-b(a+c+ac)-c(a-b) soddalashtiring.

A)-2ac B)2abc C)-2bc D)2ab+2bc

14. Agar bo’lsa, ning qiymatini toping.

A)-81 B)81 C) D)

15. Hisoblang.

A) B)3 C)2 D)

16. Agar bo’lsa ( - o’nli kasr), ning qiymatini toping.

A)9 B)6 C)7 D)13

17. soddalashtiring.

A)4 B)a+2 C)a2-2 D)a-4

18. Agar a-b=3 va ab=2 bo’lsa, 2(a3-b3) ning qiymatini toping

A)45 B)35 C)90 D)70

19. Agar a=-5 va b=-4 bo’lsa, (a3+a2b+ab2+b3)(a-b) ning qiymatini toping.

A)479 B)249 C)369 D)519

20. (ac+bd)2 (ad+bc)2 ifodani ko’paytuvchilarga ajrating.

A)(a+b)(a-b)(c+d)(c-d) B)(a+d)(a-d)(c+b)(c-d)

C)(a-c)2(b+d)2 D)(ac+bd)(ad-bc)

21. kasrni qisqartiring.

A)10 B)30 C)100 D)1000

22. 319+722 yig’indining oxirgi raqamini toping.

A)8 B)6 C)2 D)0

23. yig’indini hisoblang (oxirgi kasrning surati va maxraji 90 honali sonlar).

A)90 B)160 C)100 D)120

24. 3-4+5-6+7-8+9-10+...+2015-2016+2017 hisoblang.

A)1009 B)-1009 C)1010 D)-1010

25. (-a)9(-a6)(-a)-10 soddalashtiring.

A)a5 B)a-5 C)-a5 D)-a-5

26. hisoblang.

A)145 B)85 C)125 D)135

27. a-b=2 va ab=3 bo’lsa, a2+b2 ning qiymatini toping.

A)6 B)10 C)12 D)15

28. kasrni qisqartiring.

A) B) C) D)

29.

A)45 B)57 C)38 D)129



30. hisoblang.

A) B) C) D)
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