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帮忙出几道二次根式的计算题
人气:337 ℃ 时间:2020-01-30 01:20:38
解答
1.3√(1/6)-4√(50)+30√(2/3) 答案3√(1/6)-4√(50)+30√(2/3) = 3×√6/6-4×5√2+30×√6/3 =√6/2-20√2+10√62.(1-根号2)/2乘以(1+根号2)/2 题是这样的二分之一减根号2乘以二分之一加根号2 ...
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