Question

HELP!

Factor x2 - x - 30.
1.( x - 7)( x - 3)
2.( x + 9)( x - 3)
3.( x + 5)( x - 6)
4.( x + 4)( x - 8)

Answer 1

3.) (x + 5) (x - 6)

Explanation:

Factor the following:

x^2 - x - 30

Hint: | Factor x^2 - x - 30 by finding two numbers whose product is -30 and whose sum is -1.

The factors of -30 that sum to -1 are 5 and -6. So, x^2 - x - 30 = (x + 5) (x - 6):

Answer: (x + 5) (x - 6)