七年级数学题(x-y)³ ×(x-y)²×(y-x)
问题描述:
七年级数学题(x-y)³ ×(x-y)²×(y-x)
答
(x-y)³ ×(x-y)²×(y-x)
=(x-y)³ ×(x-y)²×[-(x-y) ]
=(-1)*(x-y)^6
=-(x-y)^6