因式分解2x-2y-x²+y² 化简x²-y²/x²y+xy²
问题描述:
因式分解2x-2y-x²+y² 化简x²-y²/x²y+xy²
答
因式分解2x-2y-x²+y²
=2(x-y)-(x+y)(x-y)
=(x-y)(2-x-y)
化简x²-y²/x²y+xy²
=(x+y)(x-y)/xy(x+y)
=(x-y)/xy