Solving Quadratic Equations Practice Cumulative

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

Solve by taking square roots.
 $x^2-225=0$  

Hint: Isolate $x^2.$   

•  $\left\{\pm\ 14\right\}$  

•  $\left\{15\right\}$  

•  $\left\{\pm\ 15\right\}$  

•  $\left\{112.5\right\}$  

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots.
 $x^2=12$  

Hint: Remember to simplify your answer!

•  $\left\{\sqrt{12}\right\}$   

•  $\left\{144\right\}$  

•  $\left\{\pm\ 2\sqrt{3}\right\}$  

•  $\left\{6\right\}$  

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solution

Tags

CCSS.8.EE.A.2

Solve the quadratic equation:

 $2x^2-5=-53$  

•  $x=2\sqrt{6}$  

•  $x=\pm2\sqrt{6}$  

•  $x=2i\sqrt{6}$  

•  $x=\pm2i\sqrt{6}$  

.How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

Tags

CCSS.HSF-IF.C.7A

What are the solutions of this graph?

• -2 and 3

• -1/2 and -6

• -2 and -6

• 3 and -6

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.11

CCSS.HSA.REI.D.10

Determine how many solutions:

• One Solution

• Two Solutions

• No Solutions

• Infinitely Many Solutions

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.11

CCSS.HSA.REI.D.10

CCSS.HSA.REI.C.7

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

Tags

CCSS.HSA-REI.B.4B

Solve by factoring: x² + 3x - 18 = 0

• x = -3 and x = 6
• x = 3 and x = -6
• x = -9 and x = 2
• x = 9 and x = -2

Tags

CCSS.HSA-REI.B.4B