How do you multiply 5sqrt8 * 4sqrt7?

May 28, 2018

$40 \sqrt{14}$

Explanation:

First, you would simplify $\sqrt{8}$ to $2 \sqrt{2}$, so the expression would look like:

$5 \times 2 \sqrt{2} \times 4 \sqrt{7}$

Then, simplify further so the expression would look like:

$5 \times 2 \times 4 \sqrt{2 \times 7}$

Multiply and you will get

$5 \times 2 \times 14 \sqrt{14}$

Simplify that further and you'll get

$40 \sqrt{14}$