Study Guide Quadratic Formula

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.

Solve using the quadratic formula:     8x² - 6x + 1 = 0

• No Solution

• 0 or 1

• -0.5 or -0.25

• 0.25 or 0.5

Use the quadratic formula to find the solutions for
y = 2x² - 9x + 5

• -8.14 and -6.14

• 4.07 and 3.07

• 3.85 and 0.65

• ZERO solutions

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4

• -4 & 10

• -8 & 4

• 8 & -4

j

h

d

-2a

b^2

4ac-b^2

a^2

-b

-b^2-4ac

b

b^2+4ac

b^2-4ac

2a

Tags

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

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

Fill in the formula =​ = ​ = ​

• -6

• 1

• -40

• -1

• 6

• 40

Fill in quadratic formula

j

h

d

a^2

-b

4ac-b^2

-b^2-4ac

b^2+4ac

b^2

-2a

b²-4ac

2a

b

Tags

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

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

Fill in the formula =​ = ​ = ​

• -6

• 1

• -40

• -1

• 6

• 40

Label these parts of the Quadratic Formula

a

b

Discriminant

Plus or Minus

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

• -6

• 1

• -40

• -1

• 6

• 40