Solving Quadratic Equations

Solve
x² + 2x - 24 = 0

• x = -6, x = 4
• x = 6, x = -4
• x = 12, x = -2
• x = 8, x = -3

Solve
3a² - 12a + 12 = 0

• -2
• 2
• 2/3
• 5

Solve:

  2x² + 7x - 15 = 0

• x = {-1.5, 5}

• x = {-5, -0.7}

• x = {-5, 1.5}

• x = {0.7, 5}

x² - 25 = 0

Which equation shows a valid step for solving the equation?

• Solve by factoring:

  ( x + 5 ) ( x - 5 ) =0

• Solve by factoring:

  ( x - 5 ) ( x - 5 ) =0

Solve for the values of x:
(x + 2)(x - 3) = 0

• A.

  { 2, 3 }

• B.

  { -2, -3 }

• C.

  { 2, 3 }

• D.

  { -2, 3 }

Factor: x² – 5x – 24

• A.

  (x - 5)(x + 19)

• B.

  (x - 8)(x + 3)

• C.

  (x - 3)(x + 8)

• D.

  (x - 19)(x + 5)

Find all the solutions for x when

x² + 9x - 36 = 0

• A.

  (x + 12)(x - 3)

• B.

  x = 12 and x = -3

• C.

  x = -12 and x = 3

• D.

  (x - 9)(x - 4)

ax²+bx+c=0  is the standard form of a quadratic equation.

• True
• False