(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_数学解答

(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

人气：445 ℃　时间：2019-08-20 13:25:23

解答

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