Solving Quadratic Equations

What are the zeros?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

What is another word for zeros?

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

How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

Solve the equation by factoring: 0 = x² - 9

• 9

• -3

• 9 and -9

• -3 and 3

What are the solutions of this graph?

• x=-2 and x=3
• x=-1/2 and x=-6
• x=-2 and x=-6
• x=3 and x=-6

Solve 9k² = 225 using square roots.

• 4

• 4, -4

• 25, -25

• -5, 5

Solve using square roots.

• m=±81

• m=±9

• m=±3

• No real solution

• A
• B
• C
• D

Factor and solve: x² - 9x + 20 = 0

• (x-10)(x+2); x = -2, 10

• (x+4)(x+5); x = -5, -4

• (x-4)(x-5); x = 4, 5

• Not factorable

Factor and solve 0 = 6x²-27x.

• (6x+1)(x+3); -1/6 and -3

• 3x(2x-9); 0 and 4.5

• 6x(x-9); 0 and 9

• (3x-9)(2x+3); -3 and -1.5