(a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b²)

来源：学生作业帮助网编辑：六六作业网时间：2024/06/30 22:24:47

(a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b²)(a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b&

(a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b²)
(a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b²)

(a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b²)
(a-b)(a+b)²-(a+b)(a-b)²+2b(a²+b²)
=(a+b)(a-b)[(a+b)-(a-b)]+2b(a²+b²)
=2b(a²-b²)+2b(a²+b²)
=2b[(a²-b²)+(a²+b²)]
=4a²b