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(根号x-2/x-2)/(根号x/根号x³-2x²)化简
人气:157 ℃ 时间:2020-04-10 19:18:55
解答
√(x-2)/(x-2)÷√x/√(x³-2x²)
=√(x-2)/(x-2)*√(x³-2x²)/√x
=√(x-2)/(x-2)*x√(x-2)/√x
=x(x-2)/(x-2)√x
=√x
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