Ch. 9 Test Review

Factor x²-6x-40

• (x-10)(x+4)
• (x+10)(x-4)
• (x-8)(x+5)
• (x+8)(x-5)

Solve using the Quadratic Formula:

2x² − x − 3 = 0

• $x=-\frac{3}{2},\ 1$

• $x=\frac{3}{2},\ -1$

• $x=-\frac{3}{2},\ -1$

• $x=\frac{3}{2},\ 1$

Solve using any form of factoring or Quadratic Formula

x² + 6x + 9 = 0

• x = −3, 3

• x = −3

• x = 3

• No Solution

Solve for the values of x:

(x + 2)(x - 3) = 0

• { 2, 3 }

• { -2, -3 }

• { 2, 3 }

• { -2, 3 }

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

• Get factored form
• Find two numbers which add to make 6 and multiply to make -13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Solve using the Square Root Method
 $x^2=36$  

•  $\pm6$  

•  $\pm18$  

•  $\pm12$  

•  $6$  

Which word is not a term for where the graph crosses the x-axis?

• Root

• Zero

• Solution

• Y-Intercept

What are the roots if

a=1, b= -12, and c=36

• x= {6, 0}

• x= {-6, 6}

• x= {-6, 0}

• x= {6}

What are the factors of
 $x^2-16$  

•  $\left(x-4\right)^2$  

•  $\left(x+4\right)^2$  

•  $\left(x-4\right)\left(x+4\right)$  

•  $\left(x\right)^2-\left(4\right)^2$  

How many roots can a quadratic function have?

(select all that are true)

• 0

• 1

• 2

• Infinite