Question

Can anyone help me on these questions?
the image is below;

many thanks,sam...

Answer 1

a)

`{( √(5)) }^(2) * {( √(3)) }^(2) = 5 * 3 = 15`

b)

`( { \sqrt[3]{9} )}^(3) * ( { √(30) )}^(2) = 9 * 30 = 270`