Question 1196417
{{{-3(x^2-4x)+5}}}, factorization to prepare Complete the Square

{{{-3(x^2-4x+4-4)+5}}}

{{{-3((x-2)^2-4)+5}}}

{{{-3(x-2)^2+12+5}}}

{{{highlight_green(-3(x-2)^2+17)}}}


Vertex is point (2, 17).
This is a maximum point, since you know by main coefficient being a negative value.