Monthly Archive: October 2011
Factorising linear expressions
This section exploles factorising linear expressions, it covers factorising by a common number: 4x+8y = 4(x+4y), factorising by a common letter, 4x+x² = x(4+x), factorising by a common number and letter 2x+4x² = 2x(1+2x)....
Formula substitution
This chapter explores substitution in formulae or formulas. The chapter first looks at subsitition in simple equations or formulae then follows on to much harder expressions or formulae. Overall it is a very simple...
Inversely proportional graph
The graph below is an inverse proportional graph, graphs of this kind are also known as Hyperbola graphs. They show that the quantities on the graph are in inverse proportion. The graph below states,...
Simultaneous equations
In this chapter we’re going to be exploring simultaneous equations. Mr Andrews runs a coffee shop that only sells cups of coffee and cups of tea. A man one day walks into his shop...
Reciprocal Numbers
In general the reciprocal of any number is one divided by that number. That is;
Factorising Quadratics
This article explores factorising quadratic equations/expressions. We shall explore factorising quadratics with x² coefficient and then factorising the difference between two squares. This article explains basic examples of factorising quadratics. This article contains harder...
Completing the square
In this chapter we’re going to explore completing the square. You will understand how to the square, and also be able to use complete the square to solve quadratic equations. Example The following is...