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数学
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2/3根号9x+6根号x/4-2x根号1/x
人气:436 ℃ 时间:2019-10-08 08:45:43
解答
2/3根号9x+6根号x/4-2x根号1/x
=2/3*3√x+6/2*√x-2x/x*√x
=2√x+3√x-2√x
=2√x-2√x+3√x
=3√x
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