Quadratic Formula

You are going to solve a quadratic equation using the quadratic formula. What does the "-B" at the beginning of the formula mean?

• The formula starts with a Negative value always.

• The formula will always start with the opposite of B.

• The formula does not begin with "-B"

You are working a quadratic equation and found that

A=3

B=7

C=10

What does the formula begin with?

• 7

• -7

• 3

• -3

 $x^2+8x+3=0$ 
A=1
B=8
C=3
Find the discriminant ( $B^2-4AC$  ).

• -768

• 76

• 52

• -4

Determine the values of a, b, and c for the quadratic equation:

4x² – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

What should you do first in solving this equation?

x² + 6x - 13 = 3

• Factor

• Write down: a = 1, b = 6, c = -13

• Get 0 on one side by subtracting 3 from both sides.

• Get 0 on one side by adding 3 to both sides.

Identify the 'c' value:

16x² - 8x - 24 = 0

• 16

• -8

• 24

• -24

Determine A, B, and C.

4x² - 5x + 7 = 10

• A = 4 B = 5 C = 7

• A = 4 B = -5 C = 7

• A = 4 B = 5 C = -3

• A = 4 B = -5 C = -3

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

You are working a quadratic equation and found that

A=3

B=7

C=10

What does the formula have in the denominator (bottom)?

• 3

• -7

• 2

• 6