来自马跃超的问题
【简便计算(注:)(1+0.23+0.34)x(0.23+0.34+0.65)-(1+0.23+0.34+0.65)x(0.23+0.34)=】
简便计算(注:)
(1+0.23+0.34)x(0.23+0.34+0.65)-(1+0.23+0.34+0.65)x(0.23+0.34)=


【简便计算(注:)(1+0.23+0.34)x(0.23+0.34+0.65)-(1+0.23+0.34+0.65)x(0.23+0.34)=】
简便计算(注:)
(1+0.23+0.34)x(0.23+0.34+0.65)-(1+0.23+0.34+0.65)x(0.23+0.34)=
原式=[1+(0.23+0.34)]×(0.23+0.34+0.65)-(1+0.23+0.34+0.65)×(0.23+0.34)=(0.23+0.34+0.65)+(0.23+0.34)×(0.23+0.34+0.65)-(1+0.23+0.34+0.65)×(0.23+0.34)=(0.23+0.34+0.65)+(0.23+0.34)...