How would you answer this?

Question

Find the inverse of f(x)=(x+2)^2-1.

Answer 1

y = (x+2)^2 - 1

swaps:

x = (y+2)^2 - 1

x+1 = (y+2)^2

+or- sqrt( x+1) = y+2

+or- sqrt(x+1) - 2 = y