Hello. I am new to this site, and I am pleased to meet you all. I was just wondering, how do you factor non-quadratic equations? My teacher mentioned grouping but what exactly is that?
here's a good explanation:
Factoring By Grouping
If that does not work for factoring, than you may use the Rational Roots Theorem. One you find a root, such as -2, then you know you have a factor of (x + 2), as the rational roots are the x - intercepts of the graph.
The Rational Root Theorem is not needed to factor by grouping. At least, not that I'm aware of.
Generally, you will always get rational roots in the rational roots theorem. This is because the possible roots are formed by p over q, which are rational numbers.