(12m+1）(2m-3)-(6m+5)(6m+5)

分类: 作业答案 • 2022-01-04 11:56:50

问题描述：

答

(12m+1)(2m-3)-(6m+5)(6m+5)
=(24㎡-36m+2m-3)-(36㎡+30m+30m+25)
=24㎡-36m+2m-3-36㎡-30m-30m-25
=-12㎡-94m-28