[tex]f(x) = {x}^{2} + 7 [/tex]
[tex]y = {x}^{2} + 7 [/tex]
Subtract the sides of the equation minus 7
[tex]y - 7 = {x}^{2} [/tex]
Take the square root of both sides of the equation
[tex]x = \sqrt{y - 7} [/tex]
So ;
[tex] {f}^{ - 1}(x) = \sqrt{x - 7} [/tex]
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And we're done.
Thanks for watching buddy good luck.
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