Quadratic Formula and Discriminant Review

Front

What is the Quadratic Formula?

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CCSS.HSA-REI.B.4B

Front

What does the discriminant tell us about a quadratic equation?

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CCSS.HSA-REI.B.4B

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Front

What is the significance of a positive discriminant?

Back

A positive discriminant indicates that the quadratic equation has two distinct real solutions.

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CCSS.HSA-REI.B.4B

Front

What is the significance of a zero discriminant?

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A zero discriminant indicates that the quadratic equation has exactly one real solution, also known as a repeated or double root.

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CCSS.HSA-REI.B.4B

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What is the significance of a negative discriminant?

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A negative discriminant indicates that the quadratic equation has no real solutions, but two complex solutions.

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Front

What is the first step in using the quadratic formula?

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Front

What error did the student make when substituting values into the quadratic formula?

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Front

If the discriminant is 76, what can we conclude about the solutions?

Back

Since the discriminant is positive (76), we conclude that there are two distinct real solutions.

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