化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)

来源：学生作业帮助网编辑：作业帮时间：2024/04/29 03:48:21

化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)

化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
(a+b)^2+2a(a-1/2b)-3(a-b)(a+b)
=a^2+2ab+b^2+2a^2-ab-3a^2+3b^2
=ab+4b^2
=b(a+4b)

(2b-a)(2b+2a)+[a(a-1)]/b