怎么分解10a(x-y)-5b(y-x)
问题描述:
怎么分解10a(x-y)-5b(y-x)
答
10a(x-y)-5b(y-x)
=10a(x-y)+5b(x-y)
=(x-y)(10a+5b)
=5(x-y)(2a+b)