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Factor and Solve Quadratic Equations

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Presentation on theme: "Factor and Solve Quadratic Equations"— Presentation transcript:

1 Factor and Solve Quadratic Equations
Ms. Nong

2 What is in this unit? Graph the quadratic equations (QE)
Solve by taking SquareRoot & Squaring Solve by using the Quadratic Formula Solve by Completing the Square Factor & Solve Trinomials (split the middle) Factor & Solve DOTS: difference of two square Factor GCF (greatest common factors) Factor by Grouping

3 Remember: The inverse opeation (opposite) of SquareRoot is Squaring &
Square is taking SquareRoot ( ) 2 ( )2 √ √

4 To complete examples you see previously…
*Put ± before 5 {-3, 7}

5 Inverse operation of Square
√SqRoot cancels out Square Subtract 3 to both sides

6 First, isolate the squared factor: 5(x + 5)2 = 75 (x + 5)2 = 15
Ex: Solve by taking square roots 5(x + 5)2 – 75 = 0 First, isolate the squared factor: 5(x + 5)2 = 75 Isolate the ( x + 5)2 (x + 5)2 = 15 Now take the square root of both sides: SqRoot both sides Put ± on the right side Subtract 5 to both sides

7 Assignment Check answers with me


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