3*x*^{3} − *x*^{2} − *x* + 4, Solution is: {`x = -1.0914`}

[SNB does not factor this example. We use Solve → Numeric]

So there is only one real solution. Checking this graphically, we have:

Graph of *y* = 3*x*^{3} − *x*^{2} − *x* + 4

We can see that there is only one (real) root, near `x = -1` as expected.

Easy to understand math videos:

MathTutorDVD.com