xy²+2xy-x
=x(y²+2y-1)
=x(y²+2y+1-2)
=x[(y+1)²-2]
=x(y+1+√2)(y+1-√2)太厉害啊，那再做多两题吧，也不算难，给个面子，保证选你为正确答案。计算；2x（3x-6）-（3x-2）（2x-3）把下列式分解因式：3x²y+6xy²+3y³拜托了！2x(3x-6)-(3x-2)(2x-3)=6x²-12x-(6x²-13x+6)=6x²-12x-6x²+13x-6=x-6 3x²y+6xy²+3y³=3y(x²+2xy+y²)=3y(x+y)²