A2: Unit 3 Quiz 2

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:  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 using square roots.

• A
• B
• C
• D

Solve using square roots

3x² = -60

• ±2i√5

• √20

• √60

• ±√30

Complete the Square and solve the equation.
m² + 12m + 19 = 0

• - 6 ± √ - 19
• 6 ± √ 19
• - 23, - 11
• - 6 ± √ 17

Solve the following quadratics equation by completing the square...

x² + 4x + 1 = 0

• x = -2 ± √3

• x = -3 ± √2

• x = 2 ± √3

• x = 2 ± √2