Is

4a^2-a-5 factorable?
If so how do you factor it?

Yes it is factorable. just make a factor tree and put all of it's factors!

what is the answer to 30 on a factor tree

To find the factors of 30, you can start by dividing it by prime numbers such as 2, 3, 5, and so on. The factors of 30 are:

1, 2, 3, 5, 6, 10, 15, 30

You can represent this in a factor tree by breaking down 30 into its prime factors:

30 = 2 * 15
= 2 * 3 * 5

Therefore, the factors of 30 can be displayed in a factor tree as:

30
/ \
2 15
\
3
\
5