tmo18 tmo18 11-01-2018 Mathematics contestada which equation shows the quadratic function f(x)=x^2-8x-6 in vertex form?A. f(x)= (x-4)^2-10B. f(x)= (x-8)^2-14C. f(x)=(x-8)^2-6D. f(x)=(x-4)^2-22