(a-b)²·(b-a)^4 =_________怎么做?

问题描述:

(a-b)²·(b-a)^4 =_________怎么做?

(a-b)²·(b-a)^4
=(a-b)²·(a-b)^4
=(a-b)^(2+4)
=(a-b)^6