
x-4/x-2 + 4/x²-4x+4 ÷ x/x-2 求计算过程
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(x-4)/(x-2)+4/(x²-4x+4)÷x/(x-2)
=(x-4)/(x-2)+4(x-2)/x(x-2)²
=(x-4)/(x-2)+4/x(x-2)
=[x(x-4)+4]/x(x-2)
=(x²-4x+4)/x(x-2)
=(x-2)²/x(x-2)
=(x-2)/x
=(x-4)/(x-2)+4(x-2)/x(x-2)²
=(x-4)/(x-2)+4/x(x-2)
=[x(x-4)+4]/x(x-2)
=(x²-4x+4)/x(x-2)
=(x-2)²/x(x-2)
=(x-2)/x
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