Mark M. answered 08/06/18
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Retired math prof. Calc 1, 2 and AP Calculus tutoring experience.
[(x-2) / (x+2)] ÷[ (4x-8) / (x2+2x)]
=[ (x-2) / (x+2)] · [x(x+2) / [4(x-2)]] = x / 4