Question

if $u = -17$, what is $sqrt{17 + u}$?

Explanation:

Step1: Substitute u into the expression

Substitute $u=-17$ into $\sqrt{17+u}$:
$\sqrt{17 + (-17)}$

Step2: Simplify the radicand

Calculate the value inside the square root:
$\sqrt{17 - 17} = \sqrt{0}$

Step3: Evaluate the square root

Compute the square root of 0:
$\sqrt{0} = 0$

Answer:

$0$