因式分解,x²y²-4+xy²-2y.
问题描述:
因式分解,x²y²-4+xy²-2y.
答
=(xy-2)(xy+2)+y(xy-2)
=(xy-2)(xy+2+y)
因式分解,x²y²-4+xy²-2y.
=(xy-2)(xy+2)+y(xy-2)
=(xy-2)(xy+2+y)