Question

Factor x 2 + 29x - 30.
(x + 15)(x - 2)
(x + 1)(x - 30)
(x - 1)(x + 30)

Answer 1

The correct answer is C) (x - 1)(x + 30)

Explanation:

To find this, we need to find factors of the last number (-30) that add up to the middle number (29). In order to do this, list out all of the factors of -30.

-1 and 30

1 and -30

2 and -15

-2 and 15

3 and -10

-3 and 10

Since -1 and 30 satisfy both of the parameters, we put them into their own parenthesis along with x.

(x - 1)(x + 30)