Question 353217
Hi
y=x^2+2x+1
this is in a general form of an equation for a parabola: y = ax^2 + bx + c
and the axis of symmetry is x = -b/(2a)
x = -1 is the axis of symmerty.
.
*Note: Vertex form of the equations would be:
y = (x + 1)(x + 1) = (x+1)^2
.
general vertex form of an equation for a parbaola is y = a(x - h)^2 +k
where (x.k) is the vertex
.
this parabola opens upward with a min value of 0, it's vertex is (-1, 0)
and range is  [0, infinity)

{{{graph( 300, 300,-6,6,-6,6,x^2+2x+1) }}}