Solving Quadratics Quiz

Find the zeros of this quadratic.

• b=4/5, b=3
• b=4, b=-3
• b=1/5, b=3
• b=4/5, b=-3

What is the greatest number of solutions that a Quadratic Equation can have?

• 0
• 1
• 2
• 3

What is another way to say "where a function crosses the x-axis"?

• x-intercept
• zero
• root
• all of these.

Which is a zero of the graph?

• 0
• -1
• 1.5
• -3

Solve using Zero-Product Property.
(x+4)(x-3) = 0

• x = 4 and x = -3
• x = 2 and x = 1
• x = -4 and x = 3
• x = -2 and x = 1

What do we call the highest or lowest point of a quadratic?

• parabola
• vertex
• graph
• point

Will the parabola open upward or downward? 
y = 3x² − 5x − 8

• Upward 
• Downward 

Factor: 49x² - 100

• (49x + 100)(x - 1)
• (7x - 10)(7x + 10)
• (49x - 10)(x + 10)
• (7x -10)(7x - 10)

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

 $a^2-10a+25$  Factor:

•  $\left(a-5\right)\left(a+5\right)$  

•  $\left(a+5\right)^2$  

•  $\left(a-5\right)^2$  

•  $\left(a-10\right)^2$