(1+0.23+0.34)×(0.23+0.34+0.65)-(1+0.23+0.34+0.65)×(0.23+0.34)的巧算
答案:3 悬赏:20 手机版
解决时间 2021-01-26 04:22
- 提问者网友:暗中人
- 2021-01-25 15:22
(1+0.23+0.34)×(0.23+0.34+0.65)-(1+0.23+0.34+0.65)×(0.23+0.34)的巧算
最佳答案
- 五星知识达人网友:掌灯师
- 2021-01-25 16:25
(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)-(0.23+0.34)-(0.23+0.34+0.65)×(0.23+0.34)
=0.23+0.34+0.65-0.23-0.34
=0.65
=(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)×(0.23+0.34)
=0.23+0.34+0.65-0.23-0.34
=0.65
全部回答
- 1楼网友:你哪知我潦倒为你
- 2021-01-25 17:57
设A=0.23+0.34,B=0.23+0.34+0.65
原式
=(1+A)×B-(1+B)×A
=B+AB-A-AB
=B-A
=0.23+0.34+0.65-0.23-0.34
=0.65
原式
=(1+A)×B-(1+B)×A
=B+AB-A-AB
=B-A
=0.23+0.34+0.65-0.23-0.34
=0.65
- 2楼网友:妄饮晩冬酒
- 2021-01-25 16:47
=(1+0.23+0.34)x(0.23+0.34)+(1+0.23+0.34)x0.65-(1+0.23+0.34)x(0.23+0.24)
-0.65x(0.23+0.34)
=0.65+(0.23+0.34)x0.65-0.65x(0.23+0.34)
=0.65
希望能帮你忙,不懂请追问,懂了请采纳,谢谢
-0.65x(0.23+0.34)
=0.65+(0.23+0.34)x0.65-0.65x(0.23+0.34)
=0.65
希望能帮你忙,不懂请追问,懂了请采纳,谢谢
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