计算x-3/2x-4÷(5/(x-2)-x-2)
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计算x-3/2x-4÷(5/(x-2)-x-2)
![计算x-3/2x-4÷(5/(x-2)-x-2)](/uploads/image/z/2042606-38-6.jpg?t=%E8%AE%A1%E7%AE%97x-3%2F2x-4%C3%B7%EF%BC%885%2F%EF%BC%88x-2%EF%BC%89-x-2%EF%BC%89)
[(x-3)/(2x-4)]÷[5/(x-2)-x-2]
=[(x-3)/(2x-4)]÷[5/(x-2)-(x+2)(x-2)/(x-2)]
=[(x-3)/(2x-4)]÷[(5-x²+4)/(x-2)]
=(x-3)/(2x-4)×(x-2)/(9-x²)
=(x-3)/(2x-4)×(x-2)/[(3-x)(3+x)]
= -1/(6+2x)
=[(x-3)/(2x-4)]÷[5/(x-2)-(x+2)(x-2)/(x-2)]
=[(x-3)/(2x-4)]÷[(5-x²+4)/(x-2)]
=(x-3)/(2x-4)×(x-2)/(9-x²)
=(x-3)/(2x-4)×(x-2)/[(3-x)(3+x)]
= -1/(6+2x)
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