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)....
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...
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,...
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...
In general the reciprocal of any number is one divided by that number. That is;
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...
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...
This section explores upper and lower bounds. We shall explore numbers rounded to the nearest 10, 100 or 1 and work out the lowest and highest values of the original rounded values. World’s strongest...
