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This is an example of a linear equation. 
To find x we can apply the same operations to both sides in order to isolate x.
First we can subtract 6 from both sides.
This gives us 4x on the le...

Whilst it is possible to do it algebraically, it's usually easier to solve it graphically. For example: for which values of x is |x+2| = |3x-6|. By sketching the graphs of y=|x+2| and y=|3x-6|, it is e...

To rearrange a formula, it is required that you group variables in certain ways, to leave you with the desired form.

For example,

Rearrange y=3x^2+3 to make x...

Doing the Past Papers only gives you a general idea of what types of questions will come up in your exam. Every exam will be different and will have those particular questions which require knowledge o...

The Pythagoras Theorem only works with right-angled triangles. If you see a triangle other than right-angled triangles, then you do not need to apply the Pythagoras Theorem. The right-angled triangle h...