00:01
In this exercise, we want to simplify the expression, and then we want to also assume that the letters denote any positive real numbers.
00:08
So let's start with part a.
00:11
So in part a, we've got the fourth root of x to the fourth, y squared, z squared.
00:18
So let's write this as x to the fourth, y squared, z squared to the one -fourth power.
00:24
So we've got x to fourth times one -fourth.
00:26
That's just going to give us x to the 1, so just x, y -square to the 1 -4th, 2 times 1 -4th.
00:31
Fourth is one half, so we've got the square root of y because it's wide one half.
00:34
Same for z, we get the square root of z.
00:37
That's our solution for a.
00:38
Now, let's see.
00:39
For part b, we've got something that looks a little difficult.
00:42
We've got the third root of the square root of 64x to the 6th...