9.10 - Quiz - Solving Quadratics

Solve:
  $x^2-49=0$  

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1

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.

Tags

CCSS.HSA-REI.B.4B

What is the greatest number of solutions that a Quadratic Equation can have?

• 0
• 1
• 2
• 3

Solve for x:  $\left(x+4\right)\left(x-3\right)=0$  
hint: it's already factored

• x = 4 and x = -3

• x = 2 and x = 1

• x = -4 and x = 3

• x = -2 and x = 1

Solve by Factoring

• A

• B

• C

• D

Tags

CCSS.HSA-REI.B.4B

Solve for x:  $x^2=4$  

• {2}

• {-2, 2}

• {4.5}

• {-1, 1}

Solve for x:  $x^2-2x=5x$  

• {-2, 5}

• {7}

• {0, 7}

• {-7, 0}

Tags

CCSS.HSA-REI.B.4B

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

• -2, 4
• -8
• ±8
• No real solution

Tags

CCSS.HSA-REI.B.4B

Solve by factoring

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B