计算或化简:[(x²+2x)/(x²-4)] -[(2)(x-2)]
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计算或化简:[(x²+2x)/(x²-4)] -[(2)(x-2)]
原式=x(x+2)/(x+2)(x-2)-2/(x-2)
=x/(x-2)-2/(x-2)
=(x-2)/(x-2)
=1
=x/(x-2)-2/(x-2)
=(x-2)/(x-2)
=1
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