计算:(2+0.36+0.75)*(0.36+0.75+0.9)-(2+0.36+0.75+0.9)*(0.36+0.75) 计算:(1.275+0.364+0.78

问题描述:

计算:(2+0.36+0.75)*(0.36+0.75+0.9)-(2+0.36+0.75+0.9)*(0.36+0.75) 计算:(1.275+0.364+0.78
9)*(0.364+0.789+4)-(1.275+0.364+0.789+0.4)*(0.364+0.789)

(2+0.36+0.75)*(0.36+0.75+0.9)-(2+0.36+0.75+0.9)*(0.36+0.75) =2*(0.36+0.75+0.9)+(0.36+0.75)*(0.36+0.75+0.9)-(0.36+0.75+0.9)*(0.36+0.75)-2(0.36+0.75)=2*0.9=1.8(1.275+0.364+0.789)*(0...