解橡乎：√稿如银(x-2)/(x-2)÷√x/√键宴(x³-2x²)
=√(x-2)/(x-2)*√(x³-2x²)/√x
=√(x-2)/(x-2)*x√(x-2)/√x
=x(x-2)/(x-2)√x
=√x
(根号x-2/x-2)/(根号x/根号x³-2x²)化简
解橡乎：√稿如银(x-2)/(x-2)÷√x/√键宴(x³-2x²)
=√(x-2)/(x-2)*√(x³-2x²)/√x
=√(x-2)/(x-2)*x√(x-2)/√x
=x(x-2)/(x-2)√x
=√x