+ 5x + 3 ≤ 0 tengsizlikning barcha butun yechimlari yig‘indisini toping. A −10 b −14 c −13 d −15

C)  D) 

25 Ifodani soddalashtiring:

A 1 B 2 C 0.5 D)to’g’ri javob keltirilmagan

26 Agar 1/2+1/3 +1/4 +1/5 = A bo`lsa, 5/2 +10/3 +17/4 +26/5 yig`indini A orqali ifodalang.

A 14+A B 10+A C 16+A D 16 - A

27 6ⁿ sonining nechta natural bo`luvchisi mavjud? (Bunda n natural son.) A 2n+1 B to’g’ri javob keltirilmagan C n+1 D 2n+2

28 x²-5x+5=0 tenglamaning x₁ va x₂ ildizlari bo’lsa ni toping

A 90 B 25 C 75 D 60

29 Tenglama nechta ildizga ega? A) 4 B) 2 C) 1 D) 0

30 kasrning natural sonlardan iborat barcha qiymatlari yig’indisini toping.

A) 105 B) 102 C) 124 D) 146