Common Core Algebra Unit 14: Solving Quadratic Equations 3/28/17 Lesson 2: Solving a Quadratic by Isolating the Variable Objective: SWBAT solve a quadratic equation by factoring using the zero product property. Do Now: Solve the quadratic equation below by factoring. 3x2 48 = 0 – Turn and Talk: Is there another way to solve the quadratic equation from the Do Now? Show your method below. Model Example: 3x2 48 = 0 Solving Quadratic Equations by Taking Square – (ax2 + c = 0) 1) Isolate x2 2) Take the square root of both sides of the equation 3) Check solution set with the original equation Check for Understanding: 2x2 98 = 0 x2 16 = 0 – – Partner Practice: Group Task: was asked to solve the following quadratic equation. Help him solve by isolating the variable. (x+ 2)2 - 2 = 14 Check for Understanding: (x- 6)2 = 25 Solve:
Common Core Algebra Unit 14: Solving Quadratic Equations 3/28/17 Lesson 2: Solving a Quadratic by Isolating the Variable Objective: SWBAT solve a quadratic equation by factoring using the zero product property. Do Now: Solve the quadratic equation below by factoring. 3x2 – 48 = 0 Turn and Talk: Is there another way to solve the quadratic equation from the Do Now? Show your method below. Model Example: 3x2 – 48 = 0 Solving Quadratic Equations by Taking Square (ax2 + c = 0) 1) Isolate x2 2) Take the square root of both sides of the equation 3) Check solution set with the original equation Check for Understanding: 2x2 – 98 = 0 x2 – 16 = 0 Partner Practice: Group Task: was asked to solve the following quadratic equation. Help him solve by isolating the variable. (x+ 2)2 - 2 = 14 Check for Understanding: Solve: (x- 6)2 = 25
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