00:01
Okay, so here we're asked to factor p squared minus 12p minus 27.
00:05
So we're trying to factor this.
00:06
We may say, okay, so we need the fact, the two binomials, p squared that be p times p, 27.
00:12
Well, that could be either 27 times 1, just don't we get to 12 in the middle there.
00:16
What else is 27? well, 9 times 3, right, is 27.
00:21
Ooh, and 9 plus 3 is indeed equal to 12.
00:25
But wait a minute, we have to get opposite signs because we need a negative 27...