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