Solve Quadratic with Square Roots

Choose the best method to solve this quadratic:

​ (a)  

2(x + 2)² - 5 = 8

• Square Roots

• Quadratic Formula

• ZPP

Choose the best method to solve this quadratic:

​ (a)  

3x² - 21 = 3

• Square Roots

• ZPP

• Quadratic Formula

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

• Completing the Square

• ZPP

• Square Roots

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

• Completing the Square

• ZPP

• Square Roots

x² = 16

• ± 4

• ± 8

• 4

• 8

Solve using square roots:

x² - 18 = 0

• x = ±√18

• No solution

• x = ±9

• x = 18

Solve using square roots:

5x² + 6 = 186

• x = 1.3 or x = -1.3

• x = 6 or x = -6

• No real solutions

• x = 6

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve using square roots:

-7x² = -91

• x = 1 or x = -1

• No real solutions.

• x = 3.6

• x = 3.6 or x = -3.6