Quadratics Basic

Factor the Polynomial:
r⁴ - 81

• (r²+9)(r+3)(r-3)
• (r² + 9)²
• (r² - 9)²
• (r+9)(r-9)

16x⁴ - 81

• (4x²+9)²
• (4x²+9)(2x+3)(3x-3)
• (x² + 9)(x² -9) 
• prime

Factor: x² - 16

• Prime
• ( x - 4) ( x + 4) 
• ( x - 8) ( x + 8) 
• ( x - 4) ( x - 4) 

Given the equation for this parabola:
 y=-(x-4)²-3,
what is the vertex?

• (4, -3)
• (-4, -67)
• (4, 0)
• (0, 13)

Determine the vertex of the parabola y=5(x-2)²–7

• (5, -7)
• (-2, -7)
• (2, -7)
• (-7, -2)

Given: y = 2(x - 5)² + 6, the vertex is

• (2,-5)
• (-5,6)
• (2,6)
• (5,6)

What is the
y-intercept of 
f(x)=-2x² + 4x - 6

• (0, 6)
• (0, -6)
• (6, 0)
• (-6, 0)

Find the axis of symmetry of
f(x)= -2x²-16x+3.

• x= 4
• x=-4
• y= 4
• y=-4

Find the vertex of f(x)= -2x²-16x+3.

• (4, -93)
• (-4, 35)
• (-4,99)
• (8,3)

What are the solutions?  0 = 7x(9x + 2)

• x= {2/9 , 7 }
• x= {-2/9 , 0 }
• x= {0 , -2 }
• x= {-7, -9/2}