Answer:
the vertex (-2, -1)
Step-by-step explanation:
y = 3x² + 12x + 11
Rewrite the equation in vertex form.
3(x + 2)² - 1
set y equal to the new right side
y = 3(x + 2)² - 1
Use the vertex form, y = a(x-h)² + k
a = 3
h = -2
k = -1
therefore,
the vertex (-2, -1)
