# How do you factor y= x^2 – 5x – 6  ?

Jun 11, 2018

$\left(x + 1\right) \left(x - 6\right)$

#### Explanation:

using the formula

$\frac{- b \pm \sqrt{{b}^{2} - 4 \times a \times c}}{2 \times a}$

with $a = 1 , b = - 5 , c = - 6$

gives the factors

$\frac{5 \pm \sqrt{25 + 24}}{2}$

or

#(5+-7)/2

resulting in the factors $- 1$ and $6$