SOLUTION: 15x^2+10x-1=0 I was asked to find the discriminant. I said is 10x-1 and did it have 2 imaginary solutions, 2 real solutions or 1 real solution. I would say 1 real. am i right?

Question 331974: 15x^2+10x-1=0 I was asked to find the discriminant. I said is 10x-1 and did it have 2 imaginary solutions, 2 real solutions or 1 real solution. I would say 1 real. am i right?
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
In a quadratic equation, the discriminant is that quantity that appears under the radical sign of the quadratic formula.
Here's the quadratic formula:
The discriminant is: and, for your problem, this would be:
and when this is evaluated, it is:

The discriminant is a positive quantity, the the quadratic equation will have two real roots.
Notice that the discriminant does not conain a variable, as you have shown in your answer!
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