Question

What is the inverse of the following equation

x^2 +4 when x >0 is one to one ?

Answer 1

The equation can be written as

y = x^2 +4

the inverse is

x = y^2 +4

Answer 2

\[x=y^2+4\]
\[x-4=y^2\]
\[y=+\sqrt{x-4}\]