(1)因式分解x^2-2y^2+y+x-xy?

2016-08-30 3:04 am

回答 (2)

2016-08-30 4:46 am
✔ 最佳答案
x^2-2y^2+y+x-xy=x^2+x-2xy-2y^2+y+xy=x(x+1-2y)+y( -2y+1+x)=((x+y)(x-2y+1)
2016-11-08 1:55 am
(x+y)(x-2y+1)


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