Question 1199166
Complete The Square for {{{y=x^2-4x+13}}}


{{{y=x^2-4x+(4/2)^2-(4/2)^2+13}}}

{{{x^2-4x+4-4+13}}}

{{{(x^2-4x+4)-4+13}}}

{{{(x-2)^2+9}}}------------------Vertex is at  (2,9) which is read directly from the expression  (for y or f(x)).