Yig`indini hisoblang. A b c d

MATEMATIKA

1. yig`indini hisoblang.

A) 2 B) 3 C) 4 D)

2. Agar a+b =7 va ab=2 bo`lsa, a²b⁴ + a⁴b² ning qiymatini toping.

A) 196 B) 180 C) 112 D) 98

3. Taqqoslang: a= b=

A) B) C)

D)

4. Agar , va bo`lsa, to`g`ri tenglikni ko`rsating.

A)

B) C) D)

5. Agar bo`lsa,

ifoda quidagilardan qaysi biriga teng bo`ladi.

A) 6-x B) 3-x C) 4-x D) 3-

6,(x-y)(x²+xy+y²) ifodaning x= va y= dagi qiymatini toping.

A) B) C) D)

7. , , c= sonni o`sish tartibida joylashtiring.

A) B)

C) D)

8. Tenglamani yeching:

A) 51 B) 15 C) 35 D) 25

9.

A) B) 4 C) -10 D) Cheksiz ko`p

10. Agar x­­₁ va X₂ 9x² +3x-1=0 tenglamaning ildizlari bo`lsa, ning qiymatini toping.

A) B) C) D)

1
1. Tenglamani ildizlar ko’paytmasini toping
A) 3 B) 2 C) 6 D) 1

1
2. Tenglamani ildizlar ko`paytmasini toping:

A) 16 B) -4 C) 5 D) -5

13. n ning qanday qiymatlarida n²x-n=x+1 cheksiz ko`p ildizga ega bo`ladi.

A) n=1 B) n=±1 C) n=­-1 D)n=

1 4. Agar

bo`lsa, ning qiymatini toping.

A) 2 B) -2 C) -1 D) 1/2

15. Tenglamani yeching: 1998x²-2000x+2=0

A) 1; 2/1998 B) -1; -2/1998

C) 1; -2/1998 D) 1; -1

16. Kvadrat uchhadni ko`paytuvchiga ajrating: 2x²-6x+4

A) 2(x-1)(x+2) B)(x-2)(x-1)

C) 2(x-1)(x-2) D)2(x+1)(x+2)

17. Kasrni qisqartiring:

18. Tenglamaning barcha haqiqiy ildizlar ko`paytmasini toping.

A) 1 B) 0 C) 0.75 D) -0.75

1
9. Ushbu ayniyatdan noma’lum α ni toping

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

20. Agar x+y=4; y+z=8 va x+z=6 bo`lsa, x-y+2z ning qiymatini toping

A) 8 B) 6 C) 7 D) 10

21. Agar a(x-1)²+b(x-1)+c=2x²-3x+5 ayniyat bo`lsa, a+b+c yig`indi nechaga teng.

A) 7 B) 8 C) 4 D) 6

2
2. Tenglamalar sistemasi nechta yechimga ega?

A) 1 B) 2 C) 3 D) ø

23. Agar a+b=10 , va a²+b²=60 bo`lsa a⁴+b⁴=?

A) 2800 B) 3400 C) 2600 D) 2900

Agar bo`lsa,

24.

ifodanisoddalashtiring.

1. 
   B) C) D)
   

25. Yig`indining oxirgi raqamini toping:

A) 3 B) 5 C) 7 D) 9

26. ifodani soddalashtiring. A] a B] a+2 C]2 D] a-2 27.Agar x<-3 bo’lsa, ifodani soddalashtiring.
A) –x-3 B)x+2 C)2-x D)-2x

28. Agar 26,4 bo’lsa, n ni toping.

A)-6 B)-7 C)-5 D)-4

29. Hisoblang:

_A) B) C) D)

30. va sonlari orasida maxraji 45 ga teng nechta oddiy kasr bor?

A) 13 B) 15 C) 17 D) 19