Question 1044473
The term to use is  {{{(4/2)^2=2}}}.


{{{y=-1(x^2+4x+2)}}}
{{{y=-1(x^2+4x+4-4+2)}}}
{{{y=-1((x^2+4x+4)-4+2)}}}
and then two or three more steps.



{{{graph(300,300,-5,5,-7,3,-x^2-4x-2)}}}