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Quadratic Equations – The Sequel
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1Quadratic Formula
Discriminants
Using the Quadratic Formula
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Quadratic Formula
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Discriminants of a Quadratic Equation
The number b2-4ac under the radical sign is called the discriminant
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Using the Quadratic Formula Solve 9x2 – 30x + 25 = 0
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Using the Quadratic Equation…Again
Solve 2x(3 – x) = 3 Beware! Do NOT try to solve this using
the zero factor rule!!!
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Using the Quadratic Formula on Word Problems
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Using the Quadratic Formula on Word Problems (Cont.)
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Practice Problems Page 91
Problems 31-44, 56-58, 62