Solve by Square Roots (part 2)

REVIEW: Above is the graph of  $y=x^2-6x+8$  
What are the roots of this quadratic?

• 0 and 8

• -2 and -4

• 3 and -1

• 2 and 4

REVIEW: Solve the equation using the zero product property.

(x- 9)(x + 3) = 0

• x = 3 or x = 9

• x = 3 or x = -9

• x + -3 or x = 9

• x = -3 or x = -9

REVIEW: Solve the equation using the zero product property.

3x ( 2x - 4) = 0

• x = -1/3 or x = -2

• x = 0 or x = 2

• x = 0 or x = -2

• x = -1/3 or x = 2

REVIEW: Solve the equation by factoring.

x² + 13x + 40 = 0

• -8, 5

• -40, -1

• 5, 8

• -8, -5

REVIEW:
Use the Quadratic Formula to solve:
 $x^2+4x-9=0$  

•  $-2\pm\sqrt{13}$  

•  $-2\pm2\sqrt{7}$  

•  $-2\pm\sqrt{7}$  

• No real solution

Solve by method of square roots:

(h - 2)² = 9

• h = 5, -1

• h = 5, -5

• h = 1, -1

• No real solution

Use the square root property to solve the Quadratic Equation.

2(x - 4)² = 200

• ±10

• -14, 6

• -6, 14

• No real solution

Solve by square roots:
 $\left(x-4\right)^2=16$  

• 0, -4

•  $\pm4$  

• 0, 8

• -8, 0

Solve by square roots:
 $x^2−1=80$  

• 81

•  $\pm81$  

• No real solution

•  $\pm9$  

Solve by square roots:
 $\left(x+1\right)^2=81$  

• 7, -11

• 8, -10

•  $\pm9$  

• 3