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Differentiation is how to find the gradient of a line. For example, the line y = 3x has a gradient of 3. Similarly, y = 4x + 2 has a gradient of 4. However, for most lines, the gradient isn't the same alo...

Any quadratic equation, that is, an equation of the form ax²+bx+c=0, can be factorised, which means it is broken down into its linear factors. This means it wi...

Simplifying a surd means to express it using smaller numbers, making it easier to use in calculations. There are a couple of facts you will need to learn about surds, these are, 1) sqrt(a x b) = s...