How do I find the inverse of $f(x)=(x-5)^2$ ?

Question

I got to the point were it equals $x=y^2-10y+25$ but I don't know how to isolate $y$

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Answer 1 · 2016-10-23T15:45:18

Here, $f >=0$ . The inverse is defined piecewise: $x=5+sqrtf(x), x>=5 and x=5-sqrtf(x), x<=5$ f