Question 984476
Convert to vertex form,
{{{f(x)=-x^2-2x-3}}}
{{{f(x)=-(x^2+2x)-3}}}
{{{f(x)=-(x^2+2x+1)-3+1}}}
{{{f(x)=-(x+1)^2-2}}}
So the vertex is (-1,-2)
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*[illustration fd14.JPG].