F(x)=radical notation 3 sqrt x-4

Question

I know the answer is f^-1(x)=x^3+4 I just need the steps please

Answer 1

First, use parentheses!
now, switch variables
x = ∛(y - 4)
x^3 = y-4
y = x^3+4

without the parens, you have
x = ∛y - 4
x+4 = ∛y
y = (x+4)^3