Question

How do you find the inverse of `f(x) = (x + 2)^2` and is it a function?

Answer 1

`x = -2+-sqrty`

Explanation:

The inverse `f^-1` of f is defined by `x = f^-1f(x)`.
`f^-1` might be single-valued or multi-valued.

Here, if y = f(x) = `(x+2)^2`
`y>=0.`,
`sqrty = +-(x+2)`
x + 2 = `+-sqrty`
`x =-2+-sqrty`.