(x²/x-2+4/2-x)÷x+2/2x计算

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(x²/x-2+4/2-x)÷x+2/2x
=(x²/x-2-4/x-2)÷x+2/2x
=(x²-4)/(x-2)÷（x+2)/2x
=(x+2)(x-2)/(x-2)÷(x+2)/2x
=2x
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