# Question #dd75d

##### 1 Answer

Apr 10, 2017

#### Explanation:

The discriminant is simply

With

#b^2 - 4ac#

#=(2)^2 - 4(1)(-8)#

#=4+32#

#=36#

With a value of

We can check our work by graphing the parabola.

graph{x^2 + 2x - 8 [-20.28, 20.26, -10.14, 10.14]}

As you can see, we are right!

Hope this helps :)