(a-b)²·(b-a)^4 =_________怎么做?
问题描述:
(a-b)²·(b-a)^4 =_________怎么做?
答
(a-b)²·(b-a)^4
=(a-b)²·(a-b)^4
=(a-b)^(2+4)
=(a-b)^6