问题
解答题
分解因式
(1)x2y-2xy2+y3
(2)x(x-y)-y(y-x)
答案
(1)x2y-2xy2+y3
=y(x2-2xy+y2)
=y(x-y)2.
(2)x(x-y)-y(y-x)
=(x-y)(x+y).
分解因式
(1)x2y-2xy2+y3
(2)x(x-y)-y(y-x)
(1)x2y-2xy2+y3
=y(x2-2xy+y2)
=y(x-y)2.
(2)x(x-y)-y(y-x)
=(x-y)(x+y).