用简便方法计算(a+b)^2·(a-b)^2

2025-03-22 16:34:44
推荐回答(1个)
回答1:

(a+b)²·(a-b)²
=[(a+b)(a-b)]²
=(a²-b²)²
=a^4-2a²b²+b^4