Warm Up. Solving Quadratic Equations by the Quadratic Formula.

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Presentation transcript:

Warm Up

Solving Quadratic Equations by the Quadratic Formula

Refresh

Practice

You try

Try again: put in general form

What does it mean to “solve”? When you are asked to “solve” a quadratic, it is asking you to find the roots.

THE QUADRATIC FORMULA

What do we do with it?

Example

Example 1 continued

WHY USE THE QUADRATIC FORMULA? The quadratic formula allows you to solve ANY quadratic equation, even if you cannot factor it.

Example 2

Example 3: You try Answer: 6, -14

Example 4: you try again! Answer: -3, 8

You try! Start with 1 and 4, then go on to the others.

Homework: 9.7 1: all 3: a and b.