=fx+−x62

Sorry the problem does not show up clearly, can you please repost it?

one to one.png

f(x) = sqrt(x-6)+2

x = sqrt(y-6)+2

(x-2)^2 = y-6

y = (x-2)^2+6

f^-1 (x) = (x-2)^2+6

x>=2

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