00:01
So for both of these, we're going to be using the foil method.
00:05
It's first, outside, inside, and as i walk through it.
00:13
So first, for a, we have a negative 4 times a 3, the first ones.
00:21
So negative 4 times a 3 is going to be a negative 12.
00:24
And then we have a, so then we can do outside.
00:31
So then it's negative 4 times a positive 2.
00:34
So that's negative 8i.
00:37
Then the inside, negative 2i times a positive 3.
00:43
So negative 6i.
00:45
Then negative 2i, which is the last one.
00:48
So negative 2i times a positive 2i is a negative 4i squared.
00:54
Now, so we can combine all of our like terms.
00:57
So we have negative 12 over here.
00:59
And then we have a negative 8i minus a 6i, which is going to be a negative 14.
01:06
I.
01:07
And then here we have something interesting.
01:09
We have a negative 4 i squared.
01:11
Now i, when it's squared, is actually equal to negative 1.
01:16
So we can convert that to negative 1...