For most problems like this, you just have to combine like terms.
Note that the roots of , where a, b, and c are integers, must be factors of c divided by factors of a.
To factor, you have to use this knowledge to your advantage and try different factors. Recognize that must factor to , and we have that . So and . You should be able to see relatively quickly that p = 1 and q = 3, which gives you a factorization of . Can you do the other factorization problem?