You can
put this solution on YOUR website!Are these 3 separate problems? If so,

and

and

Note the general rule that

and also,

also, I don't know if the signs have been covered
If so,

since

and
You can
put this solution on YOUR website!I assume those are 3 separate questions?
When you take the square root of an exponent, you just half it.

=
=
The site is cutting off the top half, but it should read y^(3/2)

=

=
Note that the square root of 4 is 2, so I took it outside of the radical and put it in front of the x^4 term.