CCSS.Math.Content.HSA.REI.B.4

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

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CCSS.Math.Content.HSA.REI.B.4

x² -4 = 77

• 9
• -9
• No Real Solutions
• 9, -9

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CCSS.Math.Content.HSA.REI.B.4

Roots of the quadratic equation of the type ax²  + bx = 0 is _____

• x = 0 
• ax + b = 0 
• x = 0 and ax + b = 0
• Not possible to find

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CCSS.Math.Content.HSA.REI.B.4

If the discriminant is positive, then the solution will be

• one real solution

• two real solutions

• no real solutions

• one imaginary solution

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CCSS.Math.Content.HSA.REI.B.4

What is the discriminant and how many solutions would this quadratic have?

3x² + 3x + 4 = -3

• -75, No Solutions

• -75, 2 Solutions

• -39, No Solutions

• -39, 1 Solution

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CCSS.Math.Content.HSA.REI.B.4

Solve using the quadratic formula.  $f\left(x\right)=2x^2-4x+7$  

•  $\frac{2\pm2i\sqrt{10}}{2}$  

•  $\frac{4\pm\sqrt{40}}{4}$  

•  $\frac{2\pm i\sqrt{10}}{2}$  

•  $\frac{2\pm2i\sqrt{40}}{4}$  

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CCSS.Math.Content.HSA.REI.B.4

What are the solutions to this equation? (x-3)(x+2) = 0

• x = 3 or x = -2

• x = -3 or x = 2

• x = 2 or x = 3

• x = 3 or x = 2

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CCSS.Math.Content.HSA.REI.B.4

Solve using the Quadratic Formula:

 $8x^2-6x+1=0$  

• No Solution

•  $x=0,\ 1$  

•  $x=-0.5,\ -0.25$  

•  $x=0.25,\ 0.5$  

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CCSS.Math.Content.HSA.REI.B.4

Find the last term:

 $x^2-8x+c$  

• 8

• 4

• -16

• 16

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CCSS.Math.Content.HSA.REI.B.4

Which is the BEST method to use to solve this equation?

3a² = 27

• Square Root Method

• Factor Method

• Complete the Square

• Quadratic Formula

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CCSS.Math.Content.HSA.REI.B.4