Question

Simplified?

Answer 1

Answer:

$10i\sqrt{2r}$.

Step-by-step explanation:

$5\sqrt{-8r}$

= $5\sqrt{-1 * 2 * 2 * 2 * r}$

= $5i\sqrt{2^2 * 2 * r}$            (i = the square root of -1)

= $5i * 2\sqrt{2 r}$

= $10i\sqrt{2r}$

Hope this helps!

Answer 2

5*sqrt(-8r) =
5i*sqrt(8r) =
10i*sqrt(2r)


The i is an 'imaginary number' and it represents the square root of -1.