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关于对数计算
计算题 (lg5)^2+lg2*lg50
*是乘号 清楚的会多加分的
人气:370 ℃ 时间:2020-01-28 14:18:47
解答
=(lg5)^2+lg2*(2lg5+lg2)
=(lg5)^2+2*lg2*lg5+(lg2)^2
=(lg5+lg2)^2
=(lg10)^2
=1
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