Question 74271
{{{-x^2-5x-6}}} Let x=-2
{{{-(-2)^2-5(-2)-6}}}plug in x=-2
{{{-4+10-6}}}
{{{10-10}}}
{{{0}}}
<p>
{{{-x^2-5x-6}}} Let x=-3
{{{-(-3)^2-5(-3)-6}}}plug in x=-2
{{{-9+15-6}}}
{{{15-15}}}
{{{0}}}
So if you plug in x=-2 or x=-3 you get 0
You can always graph this to visually verify this. It turns out that x=-2 and x=-3 are x-intercepts.