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-(3/5)²+9/25×(-24) 简便计算
人气:474 ℃ 时间:2020-03-22 18:49:54
解答
-(3/5)²+(9/25)×(-24)=-9/25+(9/25)×(-24)
=(9/25)×(-1-24)
=-9;
9/25能合并
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