00:01
Okay, we are going to find what three cube root of 128 plus five cube root of 16 is.
00:09
All right, so we are going to have to break these up because 128 and 16 are not perfect cubes.
00:16
So i can't just take the cube root of them.
00:17
We're going to have to split them up and take perfect cubes out of them if i can think of any perfect cubes that go into it.
00:24
So i'm going to list a few.
00:26
Two cubed is eight.
00:30
Three cubed is 27.
00:35
Okay, four cubed is 64.
00:41
And i'm going to do one more five cubed is 125.
00:49
All right.
00:49
So i'm looking for, do any of these numbers here go into 16 or 128.
00:55
Now i'm going to start with the 16 just because it's smaller and it's a little easier.
00:59
Because just looking at this list, i know 8 goes into 16.
01:02
And it goes into 16 two times.
01:05
So when we split this up, we get the, the cube root of 8 times the cube root of 2, which is the same thing as 16...