Quiz on Quadratic Formula

Determine the values of

a, b, and c for

the quadratic equation:

4x² – 8x = 3

*remember right side should =0

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

b² - 4ac would equal: y = 2x² -x -3

• 25

• -23

• -25

• 0

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.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Factor:  x² + 13x + 30

• (x + 3)(x + 10)
• (x + 5)(x + 6)
• (x + 2)(x + 15)
• (x + 1)(x + 30)

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.2

What are the solutions to  $2x^2-7x-3=0$  ?

• 
• 
• 
• 

Solve using the Quadratic Formula:
x² + 4x + 3 = 0

• x = 1 and x = 3
• x = 6 and x = -2
• x = -1 and x = -3

Tags

CCSS.HSA.REI.B.4

What is this formula?

• This is the speed of light formula.
• This is the quadratic formula.
• This is the zero product property.
• This is scary.

Tags

CCSS.HSA.REI.B.4

Simplify √-4

• 2i
• -2i
• 2
• 4i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

Solve using the Quadratic Formula.

• A
• B
• C
• D

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Solve: 

 $5x^2-250=0$  

• $\pm2\sqrt{5}$

• $\pm50$

• $\pm\sqrt{50}$

• $\pm5\sqrt{2}$