(1+0.35+0.47)*(0.35+0.47+0.52)-(1+0.35+0.47+0.52)*(0.35+0.47) 简便计算
问题描述:
(1+0.35+0.47)*(0.35+0.47+0.52)-(1+0.35+0.47+0.52)*(0.35+0.47) 简便计算
答
(1+0.35+0.47)*(0.35+0.47+0.52)-(1+0.35+0.47+0.52)*(0.35+0.47)
=(0.35+0.47)(1.52)-(0.35+0.47)(1.52+1)
=(0.35+0.47)(1.52-1.52-1)
=-0.82