Answer:
vertex at (8, -8)
Step-by-step explanation:
find vertex of g(x)=21(x−8)^2−8
this is in vertex form
if you recall the formula: f(x) = a (x - h)^2 + k
(h, k) is the vertex.
so here we see h = 8 and k = -8
so vertex at (8, -8)
