2/4-factoring by square roots and factoring

Solve: $\ x^2=81$  

•  $\left\{9\right\}$  

•  $\left\{\pm9i\right\}$  

•  $\left\{\pm\sqrt{9}\right\}$  

•  $\left\{\pm9\right\}$  

Solve: $x^2+7=23$  

•  $\left\{\pm\frac{8}{9}\right\}$  

•  $\left\{\pm4i\right\}$  

•  $\left\{\pm16\right\}$  

•  $\left\{\pm4\right\}$  

Solve: $36x^2=25$  

•  $\left\{\pm\frac{5}{6}\right\}$  

•  $\left\{\frac{5}{6}\right\}$  

•  $\left\{\pm5i\right\}$  

•  $\left\{\pm8\right\}$  

Solve for x

x² = 64

• x = 8, -8

• x = 32, -32

• x = 4, -4

• No real solution

Solve for x

3x² - 27 = 0

• x = 4.9, -4.9

• x = 9, -9

• x = 3, -3

• No solution

Solve using square roots.
k² - 6 = 43

• k = √37
• k = 37 or - 37
• k = 7, k = -7
• no solution

Solve.

x² - 4 = 76

• No Real Number Solution

• x = ±4√5

• x = ±80

• x = ±5√4

Solve.

x² - 10 = -10

• x= 0

• No Real Number Solution

• x = ±5

• x = 2, 5

Solve.

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.

9x² = 16

• x = ±4/3

• x= 4/3

• x= -4/3

• No Real Number Solutions