00:01
There are two parts to this problem.
00:03
In part a, we're asked to find the sum of three polynomials, 3a, 4a minus 1, and 6a plus 2.
00:11
In part b, we have those same three polynomials, but we're asked to find their product instead.
00:17
Let's start with part a and rewrite the expression without parentheses.
00:23
3a plus 4a minus 1 plus 6a plus 2.
00:32
Let's combine like terms and simplify.
00:38
3a plus 4a plus 6a is 13a, negative 1 plus 2 is positive 1.
00:46
Our final answer is 13a plus 1.
00:52
For part b, we're going to use the distributive property to multiply all three polynomials.
00:58
Start by multiplying any two of them and then multiply that result by the third...