Identify the vertex of the graph of the quadratic function f
     Identify the vertex of the graph of the quadratic function.  f (x) = (x + 2)^2 - 3  The vertex of the quadratic function is the point.  (Type an ordered pair.) 
  
  Solution
f(x) = (x+2)^2 - 3
standard equation of parabola in vertex form is
f(x) = a(x-h)^2 + k
where h,k is the vertex
comparing the two equations we get
h = -2
k = -3
vertex is ( -2 , -3 )

