X sinf, Matematika ii-tur i-variant


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математика олимпиада


A) B) C) 0,2 D) 2

3)an=n2-2n-6 ketma-ketlikning nechanchi hadi 9 ga teng bo’ladi?

A) 5 B) 6 C) 7 D) 8
4)2a2b+3a-4ab2-6b ko’phadni ko’paytuvchilarga ajrating.

A) (a-2b)(2ab+3) B) (2ab-3)(a-5b) C) (2a2+b)(b-5a) D) (3+2ab)(a-5b)

5)m ning qanday qiymatlarida (m2-1)y+1=m tenglama yechimga ega bo’lmaydi?

A) m=0 B) m=1 C) m=2 D) m=-1



6) tenglamaning nechta haqiqiy ildizi bor?

A) 2 B) 3 C) ildizi yo’q D) 1


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