Unit 4 Lessons 9-12 Quiz

Which of the following is a perfect square trinomial?

• x² + 14x – 49 
• x² + 20x + 100 
• x² – 8x + 4 
• x² – 5x + 6 

Factor

x² + 18x + 81

• (x + 9)(x – 9)

• (x + 18)²

• (x + 9)²

• (x + 6)²

Factor: 
x² - 400

• ( x - 200) ( x + 200) 
• ( x + 20) ( x + 20) 
• Prime
• ( x - 20) ( x + 20) 

Factor: 
25x² - 100y²

• ( 5x - 10y) (5xy + 10y) 
• ( 5x - 10y)²
• Prime
• ( 5x - 50y) (5x + 50y) 

Factor, if possible: 
64x²-16x+1

• Not factorable.
• (32x-1)²
• (8x+1)²
• (8x-1)²

Factor
6r²-60r

• 6r(r-10)
• 6r(r+1)
• 6(r+10)
• (3r+10)(2r-6)

Find the vertex  y = x² - 2x - 5

• V(-2, 10)
• V(-1, 15)
• V(1, -6)
• V(1, -12)

Find the vertex.  y = x²+ 16x + 71

• V(-8, 7)
• V(-8, 3)
• V(8, 10)
• V(16, -2)

Does this graph have a maximum or minimum?

• Minimum
• Maximum

What is the axis of symmetry for this graph?

• y=2
• x=2
• x=0
• y=0