[(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-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)