3x3x2x + 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:

0.511.5-0.5-1-1.5-2246810-2-4xyOpen image in a new page

Graph of y = 3x3x2x + 4

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

Easy to understand math videos: