①2 xˆ3-xˆ2=②3 aˆ2b+6a bˆ2=③(x+y)ˆ2-3(x+y)=④3x(x-y)+2x(y-x)-y(x-y)=⑤mˆ2n(m-n)ˆ2-2mn(n-m)ˆ3=⑥2aˆ2-4a=⑦(x+3)ˆ2-(x+3)=⑧(3a-4b)(7a-8b)+(11a-12b)(8b-7a)=⑨x(b+c-d)-y(d-b-c)-c-b+d=

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①2xˆ3-xˆ2=②3aˆ2b+6abˆ2=③(x+y)ˆ2-3(x+y)=④3x(x-y)+2x(y-x)-y(x-y)=⑤mˆ2n(m

①2 xˆ3-xˆ2=②3 aˆ2b+6a bˆ2=③(x+y)ˆ2-3(x+y)=④3x(x-y)+2x(y-x)-y(x-y)=⑤mˆ2n(m-n)ˆ2-2mn(n-m)ˆ3=⑥2aˆ2-4a=⑦(x+3)ˆ2-(x+3)=⑧(3a-4b)(7a-8b)+(11a-12b)(8b-7a)=⑨x(b+c-d)-y(d-b-c)-c-b+d=
①2 xˆ3-xˆ2=
②3 aˆ2b+6a bˆ2=
③(x+y)ˆ2-3(x+y)=
④3x(x-y)+2x(y-x)-y(x-y)=
⑤mˆ2n(m-n)ˆ2-2mn(n-m)ˆ3=
⑥2aˆ2-4a=
⑦(x+3)ˆ2-(x+3)=
⑧(3a-4b)(7a-8b)+(11a-12b)(8b-7a)=
⑨x(b+c-d)-y(d-b-c)-c-b+d=

①2 xˆ3-xˆ2=②3 aˆ2b+6a bˆ2=③(x+y)ˆ2-3(x+y)=④3x(x-y)+2x(y-x)-y(x-y)=⑤mˆ2n(m-n)ˆ2-2mn(n-m)ˆ3=⑥2aˆ2-4a=⑦(x+3)ˆ2-(x+3)=⑧(3a-4b)(7a-8b)+(11a-12b)(8b-7a)=⑨x(b+c-d)-y(d-b-c)-c-b+d=
①2 xˆ3-xˆ2=x²(2x-1)
②3 aˆ2b+6a bˆ2=3ab(a+2b)
③(x+y)ˆ2-3(x+y)=(x+y)[(x+y)-3]=(x+y)(x+y-3)
④3x(x-y)+2x(y-x)-y(x-y)
=3x(x-y)-2x(x-y)-y(x-y)
=(3x-2x-y)(x-y)
=(x-y)(x-y)
=(x-y)²
⑤mˆ2n(m-n)ˆ2-2mn(n-m)ˆ3
=m²n(m-n)²+2mn(m-n)³
=mn(m-n)²[m+2(m-n)]
=mn(m-n)²(3m-2n)
⑥2aˆ2-4a=2a(a-2)
⑦(x+3)ˆ2-(x+3)=(x+3)[(x+3)-1]=(x+3)(x+2)
⑧(3a-4b)(7a-8b)+(11a-12b)(8b-7a)
=(3a-4b)(7a-8b)-(11a-12b)(7a-8b)
=(7a-8b)[(3a-4b)-(11a-12b)]
=(7a-8b)(8b-8a)
=8(b-a)(7a-8b)
⑨x(b+c-d)-y(d-b-c)-c-b+d
=x(b+c-d)+y(b+c-d)-(c+b-d)
=(x+y-1)(b+c-d)

本孙初一,纯手撸,望采纳

一,X²(2x-1)
二,3ab(a²+2b²)
三,(x+y)(x+y-3)
四,(x-y)²
五,mn(m-n)(m+2)
六,2a(a-4)
七,(x+2)(x+3)
八,原式=(3a-4b)(7a-8b)-(11a-12b)(7a-8b)
...

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本孙初一,纯手撸,望采纳

一,X²(2x-1)
二,3ab(a²+2b²)
三,(x+y)(x+y-3)
四,(x-y)²
五,mn(m-n)(m+2)
六,2a(a-4)
七,(x+2)(x+3)
八,原式=(3a-4b)(7a-8b)-(11a-12b)(7a-8b)
=8(7a-8b)(b-a)
九,原式=x(b+c-d)-y(b+c-d)-(b+c-d)
=(x+y-1)(b+c-d)

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