Answer:
a) 15
b) 270
Explanation:
a)
(√5)² = 5
(√3)² = 3
This is due to the square root and to the power of 2 cancelling each other out if that makes sense. It's the same with (√3)²
So all you're actually doing is 5 × 3 which is 15
b)
It's basically the same except (³√9)³ is cube(d) root and to the power of 3
(³√9)³ = 9
(√30)² = 30
So you do 9 × 30 = 270
:)