(0.37+0.29+2)(0.37+0.29+0.17)-(2+0.37+0.29+0.17)(0.37+0.29)的简算方法

分类: 作业答案 • 2021-11-20 10:09:13

问题描述：

(0.37+0.29+2)*(0.37+0.29+0.17)-(2+0.37+0.29+0.17)*(0.37+0.29)的简算方法

答

原式=(0.37+0.29+2)*(0.37+0.29)+(0.37+0.29+2)*0.17-[(2+0.37+0.29)*(0.37+0.29)+0.17* (0.37+0.29)]
=(0.37+0.29+2)*0.17-0.17*(0.37+0.29)
=0.17*2
=0.34

(0.37+0.29+2)*(0.37+0.29+0.17)-(2+0.37+0.29+0.17)*(0.37+0.29)的简算方法