3.Algebraik tengliklar . Formulalar
1. Algebraik tenglik berilgan qatorni toping.
A) 2x+3y B) 3,5a+2,1b=15 C) 12:3+5 D) A va B javoblar to’g’ri
2. Algebraik tenglik berilmagan qatorni toping.
A) 8a+3b B) 8a+3b=15c C) P=2(a+b) D) x=y
3. To’g’ri to’rtburchakning bo’yi a metrga teng, eni esa bo’yidan 5 metr qisqa shu to’g’ri to’rtburchakning yuzini toping.
A) S=a2-5 B) S=5a-5 C) S=a(a-5) D) S=a2-5a2
4. 8x-6y =Q bunda x=y= Q ni toping.
A) 5 B) 6 C) 6/7 D) 14
5. Bog’dan har biri m kg dan 8 ta yashik olma va har biri n kg dan 10 yashik nok terib olindi . Bog’dan jami necha kg meva terib olingan .
A) 8m+10n B) 8n+10m C) 18mn D) 18m+n
6. Uzunligi x metr simdan 5y metr sim qirqib olindi. Qancha metr sim qoldi.
A) 5x-y B) y-5x C) 5y-x D) x-5y
7. Noto’g’ri tenglikni toping.
A) S=2ab B) S= C) S=ab D) S=a2
8. Algebraik ifodaning qiymatini toping. bunda a= b=4 A) B) 3,5 C) 3 D)
9. To’g’ri to’rtburchakning bo’yi x santimetr , eni esa bo’yidan 3 sm qisqa. Shu to’g’ri to’rtburchakning perimetrini toppish uchun ifoda tuzing. A) P=2(x-3) B)P=2(x+(x-3)) C) P=x+(x-3) D) P=2x-3
10. Uchburchakning bir tomoni uzunlgi a ga teng bo’lib , u ikkinchi tomonidan 2 sm qisqa uchunchi tomonidan esa 3 sm uzun. Shu uchburchakning perimetrini hisoblash uchun ifoda tuzing.
A) 3a-1 B) 3a-5 C) 3a+5 D) 1-3a E) 3a+2
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