How to identify the number of solutions using the discriminant of a quadratic

The video tutorial explains how to find the discriminant of a quadratic equation. It emphasizes setting the equation to zero, labeling variables a, b, and c, and correctly plugging values into the formula using parentheses to avoid calculation errors. The tutorial highlights the importance of understanding the order of operations and demonstrates calculating the discriminant to determine the nature of solutions.

What common mistake do students make when plugging in numbers for the discriminant calculation?

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What does the discriminant tell you about the nature of the roots of a quadratic equation?

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