CPA2 Solving Quadratic Equations (includes complex solutions)

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+ 7x + 6 = 0

• x= 3/2 and x = 2

• x = -3/2 and x = -2

• x = 6 and x = 7

• x = -6 and x = -7

Solve by factoring:3x² + 5x + 2 = 0  

• x = -2/3 and x = -1

• x = -3/2 and x = -1

• x = 2/3 and x = 1

• x = 2/3 and x = -1

Solve by factoring:  4x² + 11x - 3 = 0

• x = -3/4 and x = -1

• x = 4 and x = 3

• x = 1/4 and x = -3

• x = -1/4 and x = 3

Solve
16a² - 9 = 0

• a = ^-3/₄, ³/₄ 

• a = ^-4/₃, ⁴/₃ 

• a = ^-9/₁₆, ⁹/₁₆ 

• a = ^-16/₉, ¹⁶/₉ 

Solve.

-5x² = -50

• ± 5

• ± 10

• ± √10

• -10

Solve for x
x² - 3 = 78

• -9,9

• 9

• -9

• -√75, √75

Solve.

(x - 2) ² = 49

• 9 or -5

• ± 9

• ± 5

• ± 7

Solve.

• A

• B

• C

• D

What does i² = ?

• -1

• √-1

• 1

• -√1