因式分解x^2+2x-2xy-2y-3y^2+1
问题描述:
因式分解x^2+2x-2xy-2y-3y^2+1
答
x^2+2x-2xy-2y-3y^2+1
=x^2-2xy-3y^2+2x-2y+1
=(x-3y)(x+y)+2x-2y+1
=(x-3y+1)(x+y+1)好快!可以再帮一下忙吗?x^2+2x+4a+ax-2a^2x^2+2x+4a+ax-2a^2=x^2+ax-2a^2+2x+4a=(x+2a)(x-a)+2(x+2a)=(x+2a)(x-a+2)