00:01
Okay, so we're going to be evaluating this equation for two different values for x.
00:06
So we're going to start with our first value of negative 2.
00:10
And we're just going to go ahead and plug that in for each of the x's in the problem.
00:16
So that gives us 3 times negative 2 cubed minus 8 times negative 2 squared, minus 14 times negative 2 plus 9.
00:36
Okay, so let's go ahead and simplify.
00:40
So here we've got 3 times negative 2 cubed is going to give us negative 8.
00:50
Minus 8 times negative 2 squared.
00:55
We'll give us the positive 4.
00:59
And then we're going to end up with a positive here.
01:02
So 14 times 2 squared.
01:05
Two give us a positive 28 plus 9.
01:14
So we're going to go ahead and continue to simplify.
01:17
So we've got three times negative 8 will be negative 24.
01:22
Negative 8 times 4 is negative 32 plus 28 plus 9.
01:35
So let's go ahead and combine these even further.
01:40
So we've got a negative 24 minus 3 .3 .5 .5 .5 .5 .5 .5.
01:44
32 is going to give us a negative 56.
01:50
And then we've got 28 plus 9, give us plus 37.
02:01
So if we do negative 56 plus 37, we end up with a negative 19.
02:10
So when p or when x equals negative 2, my answer is negative 9...