These are the formulae that will be given to help you to answer the SPM Additional Maths Questions. However, more important is that you know how to apply those formulaes to solve your questions. Buy some exercises from the bookstore and work on the questions everyday and you will master all those formulaes. Basically there are divided into 5 categories:
1. Algebra
2. Calculus
3. Statistics
4. Geometry
5. Trigonometry
Simultaneous equation problem could be solved by using
1. Substitution
2. Equating Coefficients
3. Using Formulae 
This topic is closely related to the topic of quadratic equations. We will discuss further on 4 subtopics below:
1. The Basic of quadratic functions
2. Determine max and min values of quadratic function
3. How to sketch the graph of quadratic functions
4. How to find the range of values of x in Quadratic inequalities
In this chapter we will learn 3 most basic techniques on how to:
Basically there are four concepts you need to master in this chapter: