Question

identify the vertex and the axis of symmetry of the graph of the function y=3(x+2)^2-3

Answer 1

Oh noes D:
This quadratic function is already in vertex form ;)

Answer 2

and when your quadratic function is of this form (vertex form)
\[\Large y = a(x-\color{red}h)^2 + \color{green}k\]
Then your vertex is simply \(\large (\color{red}h \ , \ \color{green}k)\)

Answer 3

thanks