Year 9 maths help!!?

Question

Fractional indicies.
How do i get the answer to:
4(25) to the power of a half??

Does this: ^ mean power??

Answer 1

4(25)^(1/2) = 4(5) = 20

Yes ^ means power.

Power of 1/2 means square root.
.

Answer 2

A number to the power of a half is the same as the square root of that number, it's just another way of writing it.

Yes, ^ means 'to the power of'.

So...

4*(25)^(1/2)
=4*sqrt(25)
=4*5
=20