Quiz: Solving Quadratic/Complex Numbers

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

Solve by factoring: x² + 3x - 18 = 0

• x = -3 and x = 6

• x = 3 and x = -6

• x = -9 and x = 2

• x = 9 and x = -2

Solve by factoring: 2x² - 5x - 12 = 0

• x = -4 and x = -6

• x = 4 and x = -3/2

• x = 4 and x = 6

• x = -4 and x = 3/2

Solve for x by factoring.
x² -8x +12=0

• -6, -2
• -2, 6
• 2, 6
• -6, 2

x² + 15x + 44 = 0

• {-8, 2}
• {-7, 5}
• {-11, -4}
• {-11}

Solve.

( x + 9 ) ( x - 7 ) = 0

• x² + 2x - 63 = 0

• x = 9 and x = - 7

• x = - 9 and x = 7

• x = 9 and x = 7

Find the solutions to this equation.

5x ( 7x - 3 ) = 0

• x = 0 and x = 3 / 7

• x = 0 and x = - 3 / 7

• x = 0 and x = 7 / 3

• x = -5 and x = 3 / 7

Solve.
n² - 2n = 0

• n = 2 and 0
• n = -2 and 0
• n = 2
• n = 0

• -1