(a-2b)(3a+b)²+(a+3b)²(2b-a)
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 09:33:44
x){#^{:lc VS64r4@"B Ž@N"}
M/+(6[4C04fD"m$1p-@cPd,R
n.TT(dC,`-0ZMԅ1`@L a
(a-2b)(3a+b)²+(a+3b)²(2b-a)
(a-2b)(3a+b)²+(a+3b)²(2b-a)
(a-2b)(3a+b)²+(a+3b)²(2b-a)
(a-2b)(3a+b)²+(a+3b)²(2b-a)
=(a-2b)((3a+b)²-(a+3b)²)
=(a-2b)((9a²+6ab+b²)-(a²+6ab+9b²))
=(a-2b)(9a²+6ab+b²-a²-6ab-9b²)
=(a-2b)(8a²-8b²)
=8(a-2b)(a-b)(a+b)