Find f(g(x)) f(x) = square root of x and g(x)=x+1

$f (x) = \sqrt{x}$ and $g (x) = x + 1$

Set up the composite result function.

$f (g (x))$

Evaluate $f (x + 1)$ by substituting in the value of $g$ into $f$ .

$f (x + 1) = \sqrt{x + 1}$

Remove parentheses.

$f (x + 1) = \sqrt{x + 1}$