CA 2-2 Graded Review

Check all equivalent to X² + 8x + 7 = 0 (select 2 correct answers)

• (x+1)(x+7) = 0

• (x+4)² - 9 = 0

• (x+4)(x+4) = 0

• (x + 7) + 8 = 0

Reorder the following (5 points if all are correct).

• x² + 10x + _ = 2 +_

• (x+5)² - 27 = 0

• (x+5)² = 27

• x² + 10x + 25 = 2 +25_

• X² + 10x - 2 = 0

Select ALL equivalent to 4x(2x-3)(2x+3) (3 correct answers).

• (8x²-12x)(2x+3)

• 4x(4x²-9)

• 16x³ - 36x

• 16x³ - 48x²-36x

Select ALL equivalent to 3x(2x-4)(2x+4)

• 3x(4x² - 16)

• 12x³ - 48x²

• (6x²-12x)(2x+4)

• 12x³ + 48x² - 48x

Subtract 2x² + 5x - 6 FROM 4x² - 6x + 8.

• 2x² + 5x - 6

  4x² - 6x + 8

  ---

  6x² - x + 2

• 2x² + 5x - 6

  -4x² + 6x - 8

  ---

  -2x² + 11x - 14

• 4x² - 6x + 8

  -2x² - 5x - 6

  ---

  -2x² - 11x + 2

• 4x² - 6x + 8

  -2x² - 5x + 6

  ---

  -2x² - 11x + 14

Subtract 5x² + 4x - 1 FROM 3x² - x + 9.

• 5x² + 4x - 1

  3x² - x + 9

  ---

  8x² + 3x + 8

• 5x² + 4x - 1

  -3x² + x - 9

  ---

  4x² + 5x - 10

• 3x² - x + 9

  5x² - 4x + 1

  ---

  8x² - 5x + 10

• 3x² - x + 9

  -5x² - 4x + 1

  ---

  -2x² - 5x + 10

Find the equation equivalent to the quadratic shown. 

x² - 12x - 7 = 0

• (x - 6)² - 43 = 0

• (x - 6)² - 7 = 0

• (x + 6)² - 43 = 0

• (x + 6)² = 43

Melissa has a rectangular jewelry box with an area of 30 square feet. The jewelry box is 7 feet longer than it is width.

• Create an equation that can be used to determine the length and the width of the jewelry box.

• x(x+7) = 30

• x² + 7x -30 =0

• x(x+7) - 30 = 0

• x² + 7 = 30

Which statements regarding the function f(x) =-2x² + 12x - 5 are true? Use DESMOS CALC.

• -2(x-3)² + 13 = 0

• vertex is (3, 13)

• 2(x+3)² + 13 = 0

• vertex is (-3, 13)

f(x) = -4x² + 8x - 12 in vertex form. Use Desmos calculator.

• Vertex (1, -8)

  f(x) = -4(x-1)² - 8

• Vertex (1, -8)

  f(x) = -4(x+1)² - 8

• Vertex (-1, -8)

  f(x) = -4(x+1)² - 8

• Vertex (-1, -8)

  f(x) = -4(x-1)² - 8