Evaluate Using the Given Value f(7) = square root of 7-3

$f (7) = \sqrt{7 - 3}$

Step 1

Subtract $3$ from $7$ .

$f (7) = \sqrt{4}$

Step 2

Rewrite $4$ as $2^{2}$ .

$f (7) = \sqrt{2^{2}}$

Step 3

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

$f (7) = 2$