Question 1134938

correct

second graph in first row contains point ({{{-1}}},{{{-1}}}) which is vertex

{{{f(x) = x(x + 2)}}}..........in vertex form
 
{{{f(x) = x^2 + 2x}}}..........complete square 

{{{f(x) = (x^2 + 2x+1)-1}}}

{{{f(x) = (x+1)^2-1}}}

->{{{h=-1}}} and {{{k=-1}}}