2xy-xx-yy+1的因式分解
问题描述:
2xy-xx-yy+1的因式分解
答
2xy-xx-yy+1
=1-(x-y)^2
=(1-x+y)(1+x-y)
2xy-xx-yy+1的因式分解
2xy-xx-yy+1
=1-(x-y)^2
=(1-x+y)(1+x-y)