Question 420244
The input/0utput table:
   x/ -2, -1, 0, 1, 2
   ___________________   
   y/  3, 2, 3, 6, 11

{{{graph( 600, 600, -5, 5, -1, 12, x^2+2x+3)}}}

The vertex is (-1,2) and x=-1 the axis of symmetry.