Solving Quadratic Equations using Various Methods

What is another word for zeros?

• y-intercepts
• roots
• vertex
• axis of symmetry

What are the solutions to this equation?
(x-3)(x+2)=0

• x=3,-2
• x=-3,2
• x=2,3
• x=3,2

What are the solutions to the following quadratic function in factored form,

(4k + 5)(k + 1)?

• k = 1 and k = -1.25

• k = -1 and k = -0.8

• k = 1 and k = 0.8

• k = -1 and k = -1.25

Solve by using the best method (factoring, completing the square, or taking square roots):

  $2x^2+10x=28$  

• x = -7 and x = 2

• x = 5 and x = 2

• x = -2 and x = 7

• x = -5 and x = -2

Solve by using the best method (factoring, completing the square, or taking square roots):

x² + 4x= 12

• x = 2 and -2

• x = -6 and 2

• x = 6 and -2

• x = 1 and -1

Solve by using the best method (factoring, completing the square, or taking square roots):

x² + 10x = 75

• 5 or -15

• 15 or -5

• 10 or -10

• 10 or 75

Solve by using the best method (factoring, completing the square, or taking square roots):

3x² - 36x = 39

• 6 or -6

• 13 or -1

• 1 or -13

• 36 or -39

Solve by using the best method (factoring, completing the square, or taking square roots):

5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve by using the best method (factoring, completing the square, or taking square roots):

x² + 8x = -15

• -3 and -5

• 3 and 5

• 8 and 15

• Cannot be determined.

Solve by using the best method (factoring, completing the square, or taking square roots):

  $x^2+7x=-10$  

• x = -7 and x = 2

• x = -5 and x = -2

• x = 5 and x = 2

• x = -2 and x = 7