Question 667973
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
vertex(2,-8) and line of symmetry x = 2 and intercepts shown
Range:  F(x) &#8805; -8, Domain:  x all real numbers
f Increaseing ( 2,&#8734; )  and f is decreasing(&#8722;&#8734;,2)
 F(x) = x^2 - 4x- 4 = x^2 - 4x + 4 - 4 - 4 = (x-2)^2 - 8
{{{drawing(300,300,   -6, 6, -12, 6,  blue(line(2,12,2,-12))  , grid(1),
circle(0, -4,0.3),
circle(sqrt(8)+2, 0,0.3),
circle(2, -8,0.3),
circle(-sqrt(8)+2, 0,0.3),
graph( 300, 300, -6, 6, -12, 6,0, x^2 - 4x- 4))}}}