Respuesta :

It's choice C as the root overhead bar goes over all of (x-7) and not just the x. So you have the correct answer. 

f(x) = x^4+7
y = x^4+7
x = y^4+7
y^4 = x-7
y = FourthRoot(x-7)

[tex]y = \sqrt[4]{x-7}[/tex]

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