Question

What is the vertex of this equation y = 3(x + 2)^2?

Answer 1

3x^2 + 12x + 12

Answer 2

use x = -b/2a

Answer 3

I think its 12

Answer 4

if it's written that way, the vertex should be obvious... (-2, 0).
the vertex-form for a parabola is:
y-k = (x-h)^2 where (h, k) is your vertex.