Question 975903
It's a parabola that crosses the x-axis at {{{x=-3}}} and {{{x=5}}} and has an axis of symmetry at {{{x=1}}}.
The minimum occurs at {{{x=1}}} and is equal to 
{{{y[min]=(1+3)(1-5)=4(-4)=-16}}}
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*[illustration ss5.JPG].