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If `f(x)=(x-2)/(x+2), x ne 2,` then what is `f^(-1)(x)` equal to?
A. `(4(x+2))/(x-2)`
B. `(x+2)/(4(x-2))`
C. `(x+2)/(x-2)`
D. `(2(1+x))/(1-x)`

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