Question

Can someone please help me out with these 2 problem thanks

Answer 1

$3 \sqrt{-8} + 4 \sqrt{-50}$
$= 3i \sqrt{8} + 4i \sqrt{50}$
$= 3i \sqrt{4 \times 2} + 4i \sqrt{25 \times 2}$
$= 6i \sqrt{2} + 20i \sqrt{2}$
$= 26i \sqrt{2}$

I think part of the second question is cut off so I can't help but I hope I have helped with the first one.