Lesson 5-6: Quadratic Formula Algebra II CP Mrs. Mongold.

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Presentation transcript:

Lesson 5-6: Quadratic Formula Algebra II CP Mrs. Mongold

The Quadratic Formula Use this to solve quadratic equations

Example 1: x 2 – 3x – 40 = 0

Example 2: 2x 2 – 9x – 5 = 0

Example 3: x 2 + 6x – 9 = 0

Example 4: x 2 + 4x + 10 = 0

Homework Pg 281/16-24 Even – Just do part c.

Homework Day #2 Solve using the method of your choice! 1. x 2 – 30x – 64 = x = 0 3. x 2 – 4x + 7 = x 2 + 6x – 3 = x 2 – 8 = x = 36x 7. 2x 2 – 5x + 7 = x 2 – 7x – 15 = 0 9. x 2 + 2x + 7 = x 2 + 7x – 2 = 0