问题描述: x^2-2xy+y^2+3x-3y+2 x^2+(a+1)x-(6a^2-13a+6) x^2+xy-2y^2+2x+7y-3帮忙因式分解 1个回答 分类:数学 2014-12-01 问题解答: 我来补答 x^2-2xy+y^2+3x-3y+2 =(x-y)^2+3(x-y)+2=(x-y+2)(x-y+1)x^2+(a+1)x-(6a^2-13a+6)=x^2+(a+1)x-(3a-2)(2a-3)=(x+3a-2)(x-2a+3)x^2+xy-2y^2+2x+7y-3X=(x+2y)(x-y)+2(x+2y)+3y-3x=(x+2y)(x-y)+3(y-x)=(x+2y-3)(x-y) 展开全文阅读