Just like a second opinion please.

I have a parabola y = x^2 - 10x - 8

I have the equation y = a(x - h)^2 + K

where (h, k) are the vertex

am I right to change the signs and write;

h = 10

k = 8

so the vertex of y = x^2 - 10x - 8

= (10, 8)

Thanks