00:01
In this question, we have the expression minus 2t square plus 12t plus 80.
00:08
So to factor further, first of all, we shall take the common factor out.
00:13
We can take minus 2 as a common factor out.
00:16
We are taking this negative out because so that in the bracket we have the coefficient of t square as positive.
00:23
So the coefficient of t square will become plus 1 and the others will change its sign.
00:28
So minus of 60 minus of 40 will be the thing.
00:32
Now we need to further factorize it.
00:34
So we'll consider just the bracket part.
00:36
Let's consider t squared minus 60 minus of 40.
00:40
So to further factorize it, we shall use ac method.
00:44
In that method, we have either a x square plus bx plus c is the given trinomial.
00:50
Then we compute ac to further factorize it into two numbers such that these sums up to give b.
00:56
So in this case, our ac will be equal to minus of 40.
01:01
So we will find the factors of minus 40...