爱在泪上雕刻
春芽
共回答了14个问题采纳率:85.7% 举报
1 x²y-3xy²=xy(x-3y)
2 2x(2x-y)+y(y-2x)=(2x-y)(2x-y)=(2x-y)²
3 -6x(m-2n)+12(2n-m)=(2n-m)(12+6x)=6(2n-m)(2+x)
4 3(y-x)²-(x-y)³=(x-y)²(3-x+y)
5 4a²-36=4(a+3)(a-3)
6 (x-2y)²-x²=(x-2y-x)(x-2y+x)=-4y(x-y)
7 4x³y+4x²y²+xy³=xy(4x²+4xy+y²)=xy(2x+y)²
8 (x+y)²-2m(x+y)+m²=(x+y-m)²
9 x²-9x+18=(x-3)(x-6)
10 -8x²-10x-3=-(2x+1)(4x+3)
1年前
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