Factor 24a^2-6a-9 ...

24a ^ 2-6a-9.

you should do in this case is to see the terms that are repeated in the expression.

WE have then that the terms are a and the multiples of 3.

Making a common factor we have:

24a ^ 2-6a-9.

3 (8a ^ 2-2a-3).

3 (a (8a-2) - 3)

Answer:

The equivalent expression is:3 (a (8a-2) - 3)