Ko'phadni ko'phadga ko'paytirish — 7-sinf Algebra test savollari

1.Ko`paytiring: $(b-3)(a-2)$

• A)$ba-2b-3a+6$
• B)ba-2b-3a-6
• C)$ba+2b+3a+6$
• D)$ba-2b+3a+6$

2.Ifodani ko`phad ko`rinishida yozing: $(2x^2-y)(x^2+y)$

• A)${2x}^4+x^{2}y+y^2$
• B)${2x}^4-x^{2}y-y^2$
• C)${2x}^4+x^{2}y-y^2$
• D)${2x}^4+y^{2}x-y^2$

3.Ifodani ko`phad ko`rinishida yozing: $(b-c)(b^2-bc-c^2)$

• A)$b^3-2c^{2}b+c^3$
• B)$b^3-2b^{2}c+c^3$
• C)$b^3+2b^{2}c+c^3$
• D)$b^3-2b^{2}c-c^3$

4.Ko`phad ko`rinishida yozing: $-3b^2(b+2)(1-b)$

• A)${3b}^4+3b^3-3b^2$
• B)${3b}^4-3b^3-6b^2$
• C)${3b}^4+3b^3+6b^2$
• D)${3b}^4+3b^3-6b^2$

5.Ifodani soddalashtiring: $\left(a-b\right)\left(a+2\right)-(a+b)(a-2)$

• A)$4a+2ab$
• B)4a-2ab
• C)$4a+ab$
• D)4a-ab

6.Tenglamani yeching: ${4x}^2-16x=0$

• A)$x=0,x=-4$
• B)$x=0,x=4$
• C)$x=-4,x=4$
• D)$x=0,x=16$

7.Ko‘paytiring (a−4)(b−5)

• A)ab−5a−4b+20
• B)ab+5a+4b+20
• C)ab−5a+4b−20
• D)ab+5a−4b−20

8.Ko‘paytiring (x−2)(y−3)

• A)xy−3x−2y+6
• B)xy+3x+2y+6
• C)xy−3x+2y−6
• D)xy+3x−2y−6

9.Ko`paytiring: (m−1)(n−7)

• A)mn−7m−n+7
• B)mn+7m+n+7
• C)mn−7m+n−7
• D)mn+7m−n−7

10.Ko`paytiring: (p−6)(q−2)

• A)pq−2p−6q+12
• B)pq+2p+6q+12
• C)pq−2p+6q−12
• D)pq+2p−6q−12