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14+0.17)*(0.14+0.17+0.19)-(1+0.14+0.17+0.19)*(0.14+0.17)用拖式计算
题目详情
14+0.17)*(0.14+0.17+0.19)-(1+0.14+0.17+0.19)*(0.14+0.17)用拖式计算
▼优质解答
答案和解析
设0.14+0.17=A 0.14+0.17+0.19=B
原式=(1+A)xB-(1+B)A
=B+AB-A-AB
=B-A
=(0.14+0.17+0.19)-(0.14+0.17)
=0.19
原式=(1+A)xB-(1+B)A
=B+AB-A-AB
=B-A
=(0.14+0.17+0.19)-(0.14+0.17)
=0.19
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