Question

What is the vertex of `y=3x^2 + 12x + 5`?

Answer 1

Vertex (-2, -7)

Explanation:

x-coordinate of vertex:
`x = -b/(2a) = -12/6 = -2`
y-coordinate of vertex:
y(-2) = 12 - 24 + 5 = -7
Vertex (-2, -7)
graph{3x^2 + 12x + 5 [-20, 20, -10, 10]}