Given a quadratic equation 
, we define the discriminant as
The number of real solutions of the equation depend on the sign of 
:
- If
the equation has two solutions - If
the equation has one double solution - If
the equation has no real solutions
In this case, we have
And so this equation has no real solutions.
You have only listed one value for 'x'.
If 'x' is 2/3, then 6x is (6 times 2/3). That's 12/3 or <em>4 .</em>
If their are 785 people settled in a large cafeteria and 6 people are seated at one table you would get 785-6 and get 779 tables in a cafeteria.
