计算:[3a²/(a+b)]^3(a²-b²)÷[(b-a)/(a+b)]²

问题描述:

计算:[3a²/(a+b)]^3(a²-b²)÷[(b-a)/(a+b)]²

[3a²/(a+b)]^3(a²-b²)÷[(b-a)/(a+b)]²
=27a^6/(a+b)³×(a-b)(a+b)×(a+b)²/(a-b)²
=27a^6/(a-b)