Solve for Squares

Solving Quadratic Equation by Completing the Square_9SISC

objectives

• recall perfect square trinomial

• introduce vertex form

• Solve Quadratic Equation completing the square

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Multiple Choice

What is the value of B given  $$y=x^2-4x+3$$  

$$\left(x-B\right)^2-1$$  

• - 2

• 2

• -4

• 16

Multiple Choice

What is the value of B given  $$y=x^2-10x+7$$  

$$\left(x-B\right)^2-18$$  

• - 5

• 5

• -25

• 25

Multiple Choice

What is the value of B given  $$y=x^2-16x-8$$  

$$\left(x-B\right)^2-72$$  

• - 64

• -8

• 8

• 64

Multiple Choice

What is the value of B given  $$y=x^2+8x-9$$  

$$\left(x+B\right)^2-25$$  

• - 13

• -5

• 7

• 4

Open Ended

how do we solve for B?

Multiple Choice

What is the value of A given  $$y=x^2+12x-12$$  

$$\left(x-6\right)^2+A$$  

• -48

• -36

• 24

• 48

Multiple Choice

What is the value of A given  $$y=x^2-6x-16$$  

$$\left(x-3\right)^2+A$$  

• -25

• -19

• -7

• 7

Multiple Choice

What is the value of A given  $$y=x^2+12x-12$$  

$$\left(x-6\right)^2+A$$  

• -48

• -36

• 24

• 48

Open Ended

How do you do solve for A?

Open Ended

what is a vertex form?

Let's have a short review on how to solve by completing the square

take note of how to solve for x by completing the square

Open Ended

How do you solve Quadratic Equations by Completing the Square?

lets try to solve quadratic equations by completing the square

Open Ended

What is your common error in solving quadratic equations by completing the square?

Open Ended

leave suggestion or comment regarding our lesson today! Thanks!