The Quadratic Formula

Solve using the quadratic formula. f(x) = 2x²- 4x + 7

• $\frac{2\pm2i\sqrt{10}}{2}$
  

• $\frac{4\pm\sqrt{40}}{4}$
  

• $\frac{2\pm i\sqrt{10}}{2}$
  

• $\frac{2\pm2i\sqrt{40}}{4}$
  

• A

• B

• C

• D

Use the quadratic formula to solve 2x² + 2x - 12?

• -2, 3
• 2, 3
• 2, -3
• -2, -3

Tags

CCSS.HSA.REI.B.4

Solve x² - 5x + 10 = 0

• $\frac{5\pm i\sqrt{15}}{2}$

• $\frac{5\pm\sqrt{15}}{2}$
  

• $\frac{5\pm i\sqrt{65}}{2}$
  

• $\frac{5\pm\sqrt{65}}{2}$
  

Solve for x:

3x² - 6x + 6 = 0

• x = 1± i

• x = 3, -6

• x = 4.8, 2.7

• Undefined

Tags

CCSS.HSA.REI.B.4

Solve by the Quadratic Formula:

 $9u^2-11u+7=0$  

•  $\frac{-11\pm\sqrt{131}}{18}$  

•  $\frac{11\pm i\sqrt{131}}{18}$  

•  $\frac{11\pm\sqrt{131}}{-18}$  

•  $\frac{11\pm i\sqrt{373}}{18}$  

Solve by the Quadratic Formula:

 $-12q^2+3q+7=0$  

•  $\frac{-3\pm\sqrt{345}}{24}$  

•  $\frac{3\pm\sqrt{345}}{-24}$  

•  $\frac{3\pm\sqrt{345}}{24}$  

•  $\frac{3\pm i\sqrt{39}}{24}$  

Tags

CCSS.HSA-REI.B.4B

What are the solutions to x² - 3x = 5?

• 
• 
• 
• 

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Solve for x: 

• x = {-4, -1}
• x = {-1, -4}
• x = {2+i, 2-i}
• x = {-2+i, -2-i}

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Solve for x:

• x = {-3+2i, -3-2i}
• x = {7, 6}
• x = 2±i√3
• No solution

Tags

CCSS.HSA.REI.B.4

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.C.9