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;)
<p>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;)<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">程良鸿的回答：<div class="content-b">网友采纳 1.原式=1*（0.12+0.23+0.34）+（0.12+0.23+0.34）*（0.12+0.23）-=（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)=...
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