The factorization of this polynomial would be 0 = (x - 2)(x + 15)
In order to find it, we must look for factors of the last number (-30) that add up to the middle number (13). To do this, first list all the factors of -30.
1 and -30
-1 and 30
2 and -15
-2 and 15
3 and -10
10 and -3
5 and -6
-5 and 6
When you consider all of these factors, you can see only one of them adds up to 13 (-2 and 15). As a result, you place each of those numbers in a parenthesis with an x and multiply them together.
0 = (x - 2)(x + 15)