Evaluate Using the Given Value f(6) = square root of 6+3

$f (6) = \sqrt{6 + 3}$

Step 1

Add $6$ and $3$ .

$f (6) = \sqrt{9}$

Step 2

Rewrite $9$ as $3^{2}$ .

$f (6) = \sqrt{3^{2}}$

Step 3

Pull terms out from under the radical, assuming positive real numbers.

$f (6) = 3$