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I found that the best way to prepare was by looking at past exam questions and attempting them under exam conditions - timed, in silence, and without notes. It can also be useful to look over worksheets t...

To factorise you need to look at common factors. And it needs to be put into the expression (x+/- y)(x+/- v)For X²-X-12, you need two numbers that times to make -12 and add to make -1-1X12, -12...

Pythagoras is a theory that works for right-angled triangles and allows us to work out the length of its sides.The theory is: x² = a² + b² (I will show this with a diagra...

Differentiate using the product rule.Product rule: for y=uv , where u and v are functions of x, dy/dx=vdu/dx + udv/dxy=(7x²+2)sinx so u=(7x²+2) and v=sinx . By differentiating these ...

Drawing a diagram will help to visualise the problem and realise it is based on Pythagoras's theorem: a^2 + b^2 = c^2. We have been given 'c' the hypotenuse (5 m) and one of the shorter sides (2.2 m), whi...