# How do you solve -16x^2 - 144x – 320 = 0?

Jun 25, 2015

x= -5, -4

#### Explanation:

Divide the equation by -16 to get ${x}^{2} + 9 x + 20 = 0$

Now split the middle term as ${x}^{2} + 5 x + 4 x + 20 = 0$

x(x+5) +4(x+5)=0

(x+5)(x+4)=0

x= -5, -4