Quadratic Formula Intro

Quadratic Formula Intro

By RACHAL STEWARD

1st: Make sure equation is set equal to 0.
We call this standard form.

2nd: Identify a, b, and c.


3rd: Substitute a, b, and c into the Quadratic Formula and simplify!

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​To Use the Quadratic Formula

Multiple Choice

Identify a, b, and c in:

x²−6x+14

• a=3

  b=5

  c=9

• a=1

  b=-6

  c=14

• a=1

  b=-6

  c=-14

• a=1

  b=6

  c=14

Multiple Choice

Identify the values of a, b, and c
10p² + 7p - 20 = 0

• a=1

  b=7 c=-20

• a=10

  b=7

  c=20

• a=10 b=-7 c=-20

• a=10

  b=7 c=-20

Multiple Choice

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

Multiple Choice

Put the following equation into standard form:
5x² + x - 18 = - 9x + 3x²

• 2x² - 8x -18 = 0

• -2x² +10x -18 = 0

• 2x² +10x -18 = 0

Multiple Choice

Identify the values of a, b, and c
5x² + x - 18 = - 9x + 3x²

• a=2

  b=10 c=-18

• a=5

  b=1

  c=-18

• a=8

  b=-8 c=-18

• a=2

  b=9

  c=-18

Multiple Choice

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

• 16

• -8

• 8

• -24

• 24

Multiple Choice

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

• 16

• 8

• -8

• -24

Multiple Choice

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

• 16

• 8

• -8

• -24

• 24

Multiple Choice

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

4x² – 5x = -7x - 3

• a = 4

  b = -13

  c = -3

• a = 4

  b =-2

  c =-3

• a = 4

  b = 13

  c = 3

• a = 4

  b = 2

  c = 3

Multiple Choice

What is this formula?

• This is the standard formula of quadratics.

• This is the quadratic formula.

• This is the square root formula.

• This is the Pythagorean Theorem formula.

Multiple Choice

What should you do first in solving this equation by quadratic formula?

x² + 6x - 13 = 3

• Factor

• Write down:

  a = 1, b = 6

  , c = -13

• Subtract 3 from both sides.

• Add 3 to both sides.