Solving a Quadratic with Square Roots

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

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

• Completing the Square

• ZPP

• Square Roots

Solve using square roots:

x² + 7 = 89

• x = 9.8

• No real solution

• x = 9.1

• x = 9.1 or x = -9.1

Solve using square roots:

x² - 18 = 0

• x = ±√18

• No solution

• x = ±9

• x = 18

x² = 16

• ± 4

• ± 8

• 4

• 8

Solve the equation using square roots.
x² = 121

• 60.5

• ± 11

• ± 12

• 11

Solve for x.

x² = 36

• x = ± 6

• x = ± 18

• x = 6

• x = 18

(x-5)² = 25

• ±0

• ±10

• 10, 0

• -10, 0