2xy²-x²-y²+1等于几,因式分解
问题描述:
2xy²-x²-y²+1等于几,因式分解
答
2xy-x²-y²+1
=1-(x-y)²
=(1-x+y)(1+x-y)
2xy²-x²-y²+1等于几,因式分解
2xy-x²-y²+1
=1-(x-y)²
=(1-x+y)(1+x-y)