(3m-2n)²+24mn
来源：学生作业帮助网 编辑：六六作业网 时间：2024/07/13 22:50:35
(3m-2n)²+24mn(3m-2n)²+24mn(3m-2n)²+24mn(3m--2n)^2+24mn=9m^2--12mn+4n^2+24mn=9m^2+12mn
(3m-2n)²+24mn
(3m-2n)²+24mn
(3m-2n)²+24mn
(3m--2n)^2+24mn=9m^2--12mn+4n^2+24mn
=9m^2+12mn+4n^2
=(3m+2n)^2.
(3m-2n)²+24mn=(3m+2n)²