分解因式:(x-y)3-(y-x)2=(x-y)2乘以多少?
问题描述:
分解因式:(x-y)3-(y-x)2=(x-y)2乘以多少?
答
(x-y)×3-(y-x)×2=(x-y)×3-[-(x-y)]×2=(x-y)×3+(x-y)×2=5(x-y)
分解因式:(x-y)3-(y-x)2=(x-y)2乘以多少?
(x-y)×3-(y-x)×2=(x-y)×3-[-(x-y)]×2=(x-y)×3+(x-y)×2=5(x-y)