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Using the Discriminant

The discriminant is part of the quadratic formula, but that doesn't mean it isn't important in its own right; in fact, once it even guest-hosted The Tonight Show. The discriminant determines the number of solutions in an quadratic formula. If the discriminant is positive, there are two solutions. If the discriminant is zero, there will be one real solution. If it is negative, there will be no real solutions.

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