设：A=0.23+0.34
B=0.23+0.34+0.65
原式=（1+A)XB-(1+B)XA
=B+AB-A-AB
=B-A
=(0.23+0.34+0.65）-（0.23+0.34）
=0.65
巧算(1+0.23+0.34)*(0.23+0.34+0.65)-(1+0.23+0.34+0.65)*(0.23+0.
1个回答
相关问题
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(1+0.23+0.34)×（0.23+0.34+0.65）-（1+0.23+0.34+0.65）×（0.23+0.34
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简便计算：(1+0.23+0.34)*(0.23+0.34+0.65)-(1+0.23+0.34+0.65)*(0.23
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(1+0.23+0.34)*(0.23+0.34+0.45)-(1+0.23+0.34+0.45)*(0.23+0.34
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（1+0.23+0.34）×（0.23+0.34+0.56）-（1+0.23+0.34+0.56）×（0.23+0.34
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﹙1+0.23+0.34﹚×﹙0.23+0.34+0.56)-﹙1+0.23+0.34+0.56﹚×﹙0.23+0.34
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(1+0.23+0.34)x(0.23+0.34+0.78)-(1+0.23+0.34+0.78)x(0.23+0.34