00:01
They give us an expression, which is t to the third power plus 343.
00:11
So they want us to use the sum of two cubes.
00:16
So in our book, they tell us that, so our first step is just to kind of know the formula.
00:24
So the formula that we're going to use is we're going to use x plus y and then x squared.
00:33
Minus xy minus y squared.
00:37
All right, so just knowing that, and that's just the basic formula that we're given.
00:41
Okay, so now our second step is we have to figure out the cubes.
00:46
So i'm going to look at my first piece here.
00:50
So what cubed gives me t cubed? and then if i like here, what cubed gives me 343? it's going to be seven.
01:07
Okay...