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计算:3.14^2+6.28×0.86+0.86^2
人气:138 ℃ 时间:2020-01-29 01:53:05
解答
3.14^2+6.28×0.86+0.86^2
=3.14^2+2×3.14×0.86+0.86^2
=(3.14+0.86)^2
=4^2
=16
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