00:01
In this problem, we're being asked to perform the given operations.
00:03
Well, in this particular problem, we're being asked to subtract two polynomials, and it's also given to us in vertical form.
00:10
Well, when we subtract two polynomials, we simply need to change the signs of each term in the polynomial that's being subtracted, which in this case is the polynomial in the second row.
00:20
So what we're going to do first is we're going to rewrite all of the terms in the first row, because they will not change.
00:27
So we'll have 8c squared minus 4c minus 5.
00:33
Now we're going to change the sign of each term in the second row.
00:37
So our negative c squared will become positive c squared.
00:41
The positive 2c will become negative 2c, and the positive 9 will become negative 9.
00:46
And now we're all set to combine our like terms, which if you know this are all in columns...