Solving Quadratic Equations by Factoring, Square Roots, Completing the Square

Choose the best method to solve this quadratic:

​ (a)  

3x² - 21 = 3

• Square Roots

• ZPP

• Quadratic Formula

Choose the best method to solve this quadratic:

​​ (a)  

x² + 8x - 13 = 0

• Square Roots

• ZPP

• Quadratic Formula

Choose the best method to solve this quadratic:

​ (a)  

x² - 7x + 12 = 0

• ZPP

• Square Roots

• Quadratic Formula

Choose the best method to solve this quadratic:

​ (a)  

2(x + 2)² - 5 = 8

• Square Roots

• Quadratic Formula

• ZPP

Solve using square roots.

• ±81

• ±9

• ±3

• No real solution

When factoring
x² - 4x + 4 = 20,
what goes in the blank?
(x - __ )² = 20

• 4

• 2

• 8

• 20

Solve using square roots.

• ±81

• ±9

• ±3

• No real solution

Which method of solving quadratics would you use to solve the following:

• Completing the Square

• ZPP

• Square Roots