Algebra

Factorising quadratics

Factorising Quadratics

Sometimes you might be asked to factorise expressions. Factorising is the opposite of multiplying out brackets - i.e. putting an expression into two brackets. A...
proportion joke

Direct and Inverse Proportion

These sometimes come up on the exam - so don't forget about them! Direct Proportion If two quantities are in direct proportion then when one increases or ...
graphing simultaneous equations

Graphing Simultaneous Equations

Sometimes you might be asked to solve simultaneous equations using graphs. You simply plot both equations on the graph and wherever they intersect are the solut...
simultaneous equations

Simultaneous Equations

These are equations you need to solve at the same time...but there's two types you could get..one of which is probably the toughest thing in GCSE maths. Ones...
trial and error

Trial and Improvement

You might be asked to find an answer where there is no exact answer and asked to give the number to a degree of decimal places or significant figures. Trial and...
inequalities

Inequalities

These are a bit like equations....but with one really big exception! The Symbols > Means greater than < Means less than <≥ Means greater than or eq...
algebra in fractions

Algebra In Fractions

Some questions could involve BOTH algebra and fractions. Double the fun. You Can Cancel Terms On The Top And Bottomso 2x2 y4/ xy just becomes 2xy3.Look out f...
completing the square

Completing The Square

This is one of the trickiest things you have to do. Basically you have to express a quadratic as a squared bracket with a number on the end to 'complete it'...c...
The quadratic formula

The Quadratic Formula

This solves any equation in the form ax² + bx + c = 0. It's usually given in an exam...but you should learn it and how to use it. Things To Remember ...
Solving equations

Rearranging And Solving Equations

When rearranging and solving equations there is one major rule...whatever you do to one side you have to do to the other. You will be asked to solve an equation...