# How do you factor #y=x^2 - 2x - 15# ?

##### 2 Answers

May 28, 2018

#### Explanation:

#"the factors of - 15 which sum to - 2 are - 5 and + 3"#

#y=(x-5)(x+3)#

May 28, 2018

#### Explanation:

First, find two numbers that have a sum of -2 (the second term) and have a product of -15 (the third term)

Multiples of 15:

1 | 15

3 | 5

Use this to "split the middle" of the polynomial

Factor