Simple Quadratic Formula

Solve the following quadratic equation:

x² + 6x - 16 = 0

• x = 2 and -8

• x = 4 and 2

• x = 6

• x = 8 and -2

Answer explanation

To check your answer, plug it in and see if it works!

Solve with the quadratic formula (round if needed):

4x² + 12x + 5 = 0

• x = 4 and 5

• x = -2.3 and -0.5

• x = 2.3 and 1

• x = 12 and 0

What is the value of "b" in the following: -2x² - 5x + 2 = 0?

• -2

• -5

• 2

• 0

Answer explanation

"b" is the coefficient of the "x" term

In the quadratic equation given, what is the value of c?

-4x² + 2x -1 = 0

• -4

• -1

• 2

• 0

Answer explanation

It's the constant!

Fill in quadratic formula

j

h

d

b^2+4ac

4ac-b^2

-b

2a

a^2

-b^2-4ac

b

-2a

b^2

b^2-4ac

Fill in the formula x^2-6x-40=0 ​ BLUE=​ (a)   RED= ​ (b)   GREEN= ​ (c)  

• -6

• 1

• -40

• -1

• 6

• 40

Fill in the formula =​ = ​ = ​

• -6

• 1

• -40

• -1

• 6

• 40

j

h

d

b^2

a^2

b²-4ac

b

-b^2-4ac

4ac-b^2

-2a

-b

2a

b^2+4ac

Tags

CCSS.MATH.CONTENT.HSN.CN.C.7

CCSS.MATH.CONTENT.HSA.SSE.A.1.b

• -6

• 1

• -40

• -1

• 6

• 40