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(3.7654)2+0.4692*3.7654+(0.2346)2简便方法计算
人气:358 ℃ 时间:2020-05-12 02:11:47
解答
.7654^2+0.4692×3.7654+0.2346^2
=3.7654^2+2*0.2346×3.7654+0.2346^2
=(3.7654+0.2346)^2
=4^2
=16
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