1. noldan farqli a,b,c sonlar uchun a+b+c=26, =28 bo’lsa ni toping

TEST

1. noldan farqli a,b,c sonlar uchun a+b+c=26 , =28 bo’lsa ni toping
A) 725 B) 726 C) 727 D) 728
2. . Soddalashtiring


3. x₁ va x₂ x²-8x+13=0 tenglamaning ildizlari bo`lsa x₁x₂²+x₁²x₂=?
A) 152 B) 104
C) –104 D) –152
4. . x va y raqamlar. xxx va yyy uch honali sonlar bo‘lib, (xxx)²+(yyy)²=61605 bo‘lsa, x²+y²=?
A) 5 B) 425 C) 555
D) 15 E) aniqlab bo‘lmaydi
5. toping.
A) 1,(09) B) 16,(45)
C) 16,(36) D) 17,(4)
E) 17,(45)
6. Soddalashtiring.

A) x²+1 B) x²–1 C) x+1
D) x–1 E) –x–1
7.
bo‘lsa x ning musbat qiymatini toping.

8. Ifodani soddalashtiring.
A) Cos24^o B) Sin24^o C) 1
D) tg24^o D) tg12^o
9. Tengsizlikni yeching.
A) (0;5) B) (–∞;–5)U(0;5)
C) [–5;0)U[5;∞) D) (0;5)U{–5}
E) (–5;0)U(5;∞)
10. x²+(3–m)x+m–2=0 tenglama ildizlari teskarilari yig’indisi –0,5 bo’lsa, m=?

11. Soddalashtiring.
A) 1 B) Sinx C) Cosx
D) tgx E) ctgx
12.

13. ko’phadni ko’paytuvchilarga ajrating.
A) –6(x–3z)(x–2y)(2y–3z)
B) To’g’ri javob keltirilmagan.
C) Ko’paytuvchilarga ajralmaydi
D) –3(x–2y)(2y–3z)(3z–x)
E) 3(x–3z)(2y–x)(2y–3z)
14. tenglamalar sistemasidan qanchaga teng.
A) 3 B) -3 C) 5 D) 8
15. tenglamadannoma’lumo’zgaruvchi nechaga teng? A) 20 B) 19 C) 21 D) 22
16. Arifmetikprogressiya ; bo’lsa, nechaga teng? A) 25.6 B) 25C) 26,4 D) 27
17. kasrni qisqartiring.
A) B) C) D)
18. ;-4; ;… geometrik progressiya hadlari yig`indisini toping.
A) B) C) D)
19. Системани ечинг.
A) (4;1), (2;3) B) (1;4), (3;2) C) (4;1), (1;4)
D) (4;4), (1;4) E) (2;1), (1;2)
20. Тенглама k нинг єандай єийматида ечимга эга эмас?