因式分解a(x-y)∧2-b(y-x)
问题描述:
因式分解a(x-y)∧2-b(y-x)
答
a(x-y)²-b(y-x)
=a(x-y)²+b(x-y)
=(x-y)×[a(x-y)+b]
=(x-y)(ax-ay+b)