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通过用字母代替数成政治问题来解决1.345*0.345*3-1.345^2-1.345*0.69
人气:198 ℃ 时间:2020-03-25 15:04:08
解答
1.345*0.345*3-1.345^2-1.345*0.69
=1.345*(0.345*3-1.345-0.69)
=1.345*(1.035-1.345-0.69)
=1.345
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