因式分解:(1)(a+b)²+a+b+1/4 (2)6(x-y)²+3(y-x)³
问题描述:
因式分解:(1)(a+b)²+a+b+1/4 (2)6(x-y)²+3(y-x)³
答
(a+b)²+a+b+1/4
=(a+b+1/2)的平方
(2)6(x-y)²+3(y-x)³
=3(x-y)²(2x-2y-x+y)
=2(x-y)(x-y)
=2(x-y)³