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Published byBeatrix Hodge Modified over 8 years ago

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Section 9-9: The Quadratic Formula & The Discriminant Pg.652

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Objectives & Vocabulary 1.Solve quadratic equations by using the Quadratic Formula. 2.Determine the number of solutions of a quadratic equation by using the discriminant. The Quadratic Formula (pg.652): The solutions of ax 2 +bx+c, where a≠0, are Discriminant (pg.654): the part of the quadratic equation that is under the radical sign. Quadratic equations can have 2, 1, or no real solutions. If the discriminant is positive, the equation has two real solutions, if it equals 0, the equation has one real solution, and if it’s negative, the equation has no real solutions

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Example 1: Using the Quadratic Formula

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Example 2: Using the Quadratic Formula to Estimate Solutions

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Example 3: Using the Discriminant

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Homework Time—Yea!! Pg.657-8(2-38E)

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