Quadratic Formula and Discriminant Practice

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

• -2, 3
• 2, 3
• 2, -3
• -2, -3

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

To prepare to do the quadratic formula,

set one side equal to zero:

-2x² = 7x - 4

• -2x² - 7x + 4 = 0

• -2x² +7x - 4 = 0

• -2x² - 7x - 4 = 0

• -2x² + 7x + 4 = 0

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

Use quadratic formula to solve: $8x^2-4x-18=0$  

•  $\left\{\frac{1\pm\sqrt{37}}{4}\right\}$  

•  $\left\{8,4,18\right\}$  

•  $\left\{\frac{38}{4},-\frac{38}{4}\right\}$  

•  $i\sqrt{37}$  

Tags

CCSS.HSA-REI.B.4B

Use quadratic formula to solve: $9x^2-6x-11=0$  

•  $\left\{\frac{1\pm\sqrt{12}}{4}\right\}$  

•  $\left\{1\pm2\sqrt{3}\right\}$  

•  $\left\{\frac{1\pm2\sqrt{3}}{3}\right\}$  

•  $b^2-4ac$  

Determine the value of the discriminant and describe the number and type roots for the following:

x² + 7x + 13

• 101, 2 real roots

• 3, 2 real roots

• -101, 2 imaginary roots

• -3, 2 imaginary roots

Tags

CCSS.HSA-REI.B.4B

____________
For the function above, is the discriminant positive, negative, or zero?

• Positive
• Negative
• Zero
• Not Sure

Tags

CCSS.HSA.REI.B.4

If the discriminant is negative, then the quadratic has:

• 1 Real Solution

• 2 Real Solutions

• Half a Solution

• 2 Complex (imaginary) Solutions

Tags

CCSS.HSA-REI.B.4B

Find the zeros.

• 0 and 4
• 0 and -4
• 0
• -4

Tags

CCSS.HSF-IF.C.7A

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

• x=3,-2
• x=-3,2
• x=2,3
• x=3,2

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4