Basics of Quadratic Formula

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.REI.B.4

CCSS.HSA.CED.A.1

What is this formula?

• This is the standard formula.

• This is the quadratic formula.

• This is the square root formula.

• This is the Pythagorean formula

Tags

CCSS.HSA-REI.B.4B

What should you do first in solving this equation?

x² + 6x - 13 = 3

• Factor

• Write down: a = 1, b = 6, c = -13

• Subtract 3 from both sides.

• Add 3 to both sides.

Tags

CCSS.HSA-REI.B.4B

In the equation
y = x² +5x +7, match each leading coefficient with its correct letter 

• a=0, b=5, c=7
• a=1, b=5, c=7
• a=7, b=5, c=1

How many solutions does the equation 4x² + 4x + 1 = 0 have?

• 0
• 1
• 2
• More than 2

Tags

CCSS.HSA-REI.B.4B

If the discriminant is zero you will have

• no real solutions
• two real solutions
• 1 real solution
• 1 imaginary solution

Tags

CCSS.HSA-REI.B.4B

Identify the values of A, B, and C

3m² - 14 = 11m

• A=3, B=-11, C=-14

• A=3, B=-14, C=11

• A=3, B=11, C=-14

• A=3, B=-14, C=11

Tags

CCSS.HSA.REI.B.4

Identify the values of A, B, and C

11r² + 6r = 6

• A=11, B=-6, C=-6

• A=11, B=6, C=6

• A=11, B=6, C=-6

• A=1, B=6, C=-6

Tags

CCSS.HSA.REI.B.4

Identify the 'b' value: y = 16x² -8x -24

• 16
• -8
• 8
• -24

b²  would equal: y = 2x² -x -3

• 2
• -1
• 1
• -3

Tags

CCSS.HSA-REI.B.4B