Solving Quadratic Equations Study Guide

• (x-9)(x+2); x = -2, 9

• (x+9)(x+2); x = -9, -2

• (x-9)(x-2); x = 2, 9

• (x+9)(x-2); x = -9, 2

• x = ± 8/3

• x = 8/3

• x = 0, 8/3

• There are no zeros for k.

Which equation could match the graph?

• y = 1/3(x + 1)(x + 4)

• y = 1/3(x - 1)(x - 4)

• y = 1/3(x - 4)(x - 4)

• y = 1/3(x + 2.5)(x + 4)

What are the x-intercepts of the graph of 2x² + 7x - 15 = 0?

• x = -3/2, 5

• x = -7/10, 5

• x = -5, 3/2

• x = -5, 7/10

What is the vertex of this equation?
y = (x + 3)² -7

• (3, 7)

• (-3, -7)

• (-3, 7)

• (3, -7)

Solve the following quadratic equation...

x² + 3x + 2 = 0

• x = -1

  x = -2

• x = 1

  x = 2

• x = -1

  x = 2

• x = 1

  x = -2

Solve the following quadratic equation...

x² + 7x + 12 = 0

• x = -2

  x = -6

• x = -3

  x = -4

• x = -1

  x = -12

• x = 2

  x = 6

Solve the following quadratic equation...

x² + 9x + 20 = 0

• x = -2

  x = -10

• x = -5

  x = -4

• x = -1

  x = -20

• x = 4

  x = 5

Solve the following quadratic equation...

x² + 13x + 36= 0

• x = -2

  x = -18

• x = -9

  x = -4

• x = -3

  x = -12

• x = -6

  x = -6

Solve using the quadratic formula.
2x² - 9x - 35 = 0

• x = 7/2, x = -6

• x = -5/2, x =5

• x = -3/7, x =6

• x = -5/2, x = 7