Quadratic Equations

Quadratic EquationsNotes for April 28thAnswers to Warm-Up1. 2. 3.(x 4)(x 7)4.(6x + 9)(3x 3)

Answers to Warm-Up5. 6. 7. 8.

Word of the DayQuadratican equation or expression that is taken to the second powerToday's ObjectiveIWBAT to solve quadratic equations by factoring.DefinitionQuadratic Equation An equation that is taken to the second power that has 2 solutions for answers.

2 solutions?! Yikes!

Standard FormQuadratic equations are of the form:

You can NOT solve it if it is not in this formax2 + bx + c = 0

I will guide youthrough thisHow to Solve Quadratic Equations1.)Put the equation into standard form.

2.)Factor the equation

3.)Set the factors equal to 0.** This is called the Zero Product Property

4.)Solve for both xs

5.)Put your solution in proper formx2 + 11x + 24

(x + 3)(x + 8)

x + 3 = 0x + 8 = 0

x = -3x = -8

x = -3, -8StepsModel

I need to see another example NOW!!

Example #1

Example #2

When you have a binomial squared, you only have 1 solution!Time for some whiteboard practice!Dance to get your boards!

Whiteboard Problem #1

Whiteboard Problem #2

Whiteboard Practice #3

Whiteboard Practice #4

Whiteboard Practice #5

Whiteboard Practice #6

Please put your whiteboards back but Dance while you do it!

Exit QuizFactor.Solve.