How do you factor the trinomial a24a21?

1 Answer
Mar 30, 2016

(a+3)(a7)

Explanation:

For a trinomial of this type we can factor it by looking for two numbers which multiply together to equal 21 and have a sum of3

In this case: (+3)and (7) meet tis requirement.

(+3)(7)=21

(+3)+(7)=4

Using this information I can factor a24a21 into:

(a+3)(a7)