00:01
We are taking a binomial times a trinomial, which means we're going to need to do two distributive properties, a double distributive property.
00:09
We'll start by taking a and distributing it to everything inside the second parentheses into the trinomial, and then we'll do the same thing with two, and then we'll combine any like terms that we happen to have to get our final answer.
00:22
That is our strategy for this question, for this problem.
00:25
So to start, let's go ahead and start distributing a.
00:29
A times 3a squared would be 3a to the third.
00:37
A times 4a would be 4a squared.
00:43
A times negative 2 would be negative 2a.
00:48
Now we have successfully distributed a to everything in the second parentheses.
00:53
Next step, we need to distribute 2 to everything in the second parentheses.
00:57
The second quantity.
01:00
2 times 3a squared would be 6a squared.
01:06
2 times 4a would be 8a...