Hi!

You can solve , that is, find the roots of the polynomial. This can be done by using the quadratic formula:

This will give you two roots. Call these roots a and b (assuming here that ). So you polynomial can be written

We do the same with your polynomial:

Now using the quadratic formula we get: , which gives the two solutions

So we can factor your polynomial as , and we multiply it out we indeed get what we started with.