# Cubic Equations

## Solving Cubic Equations

In this section we will learn how to solve cubic equations. Note that the procedure of factorising cubic polynomials is dealt with here.

## Video

This video from the *maths support centre SUMS at NUI Galway* explains how to solve a cubic equation by factorising the cubic polynomial.

Note: All *SUMS NUIG* content is available for free at www.nuigalway.ie/public-sites/s-u-m-s .

## Notes

The following notes from MathCentre are a resource for cubic polynomials and cubic equations:

- Introduction to cubic expressions and roots (Pages 1-4)
- How to solve cubic equations (Pages 5-10)
- Graphical interpretation of cubic expressions (Pages 10-11)

Note: a particular type of procedure called ''synthetic divisionâ€™' is used to factorise the cubic polynomial here.

Try the exercises in the notes to test your knowledge of solving cubic equations.

A pdf of this document can be downloaded here.