简便计算(2023:5:39)(1+0.12+0.23)X(0.12+0.23+0.34)-(1+0.12+0.23+0.34)X(0.12+0.23)如果A▲B=3A-2B,求2▲(amp;#160;3▲4amp;#160;amp;#160;amp;#160;amp;#160;)

问题：简便计算(2023:5:39)(1+0.12+0.23)X(0.12+0.23+0.34)-(1+0.12+0.23+0.34)X(0.12+0.23)如果A▲B=3A-2B,求2▲(amp;#160;3▲4amp;#160;amp;#160;amp;#160;amp;#160;)

答案：↓↓↓

程良鸿的回答：

网友采纳　　1.原式=1*（0.12+0.23+0.34）+（0.12+0.23+0.34）*（0.12+0.23）-[1*(0.12+0.23)+(0.12+0.23)*(0.12+0.23+0.34)]=（0.12+0.23+0.34）+（0.12+0.23+0.34）*（0.12+0.23）-(0.12+0.23)-(0.12+0.23)*(0.12+0.23+0.34)=...