Inverse function

Question

f(x)x^7-1

And I got root(7(x))+1
which is the (7root of x)+1

Answer 1

If f(x)=x^7 -1
f(x)+1=x^7

g(x)=(x+1)^1/7 or the seventh root of (x+1)

Answer 2

thanks!
I sort of figured this one out after a lot of searching online