# What is the discriminant of #x^2 = 4#?

##### 1 Answer

Sep 11, 2014

First this quadratic equation must be put in standard form.

To accomplish this you have to subtract 4 from both sides of the equation to end up with ...

We now see that

Now substitute in the values for a, b, and c in the discriminant

Discriminant:

Please see the following link for another example usage of the discriminant.