Factoring is not the only way to solve a quadratic equation. Did you try the quadratic formula?

Again, use the quadratic formula. If the roots are complex (discriminant is negative) then the graph only crosses the x-axis at x= -2.Second problem:

I need to find the zeros of the following polynomial so that I can graph it:

Using synthetic division, I found one zero, so now I have:

I'm pretty sure that can't be factored, so what does this mean for the graph?

Again, use the quadratic formula. If the roots are complex (discriminant is negative) then the graph only touches (but does not cross) the x-axis at x= -1.Final problem:

I need to find the zeros of the following polynomial so that I can graph it:

I used synthetic division to find:

Again, it doesn't seem that I can factor any further. What does this mean for the graph?

Thanks again!