Question

simply 3 (sqrt(c^2)) if c is > or equal to 0I can upload a picture

Answer 1

Recall that:

$\begin{gathered} \text{For all x}\in\R \\ \sqrt[]{x^2}=|x|\text{.} \end{gathered}$

Therefore:

$3\sqrt[]{c^2}=3|c|\text{.}$

Now, since c≥0, we get that:

$|c|=c\text{.}$

Substituting the above result in 3|c| we get:

$3\sqrt[]{c^2}=3c\text{.}$

Answer:

$3c\text{.}$