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When solving simultaneous equations you are aiming to use both equations together to find out the value of x and y for values that with ‘fit’ in each equation....

This is an A* grade extension GCSE maths question on rearranging equations.

The question is asking us to find an equation that would represent x. In the question...

Completing the square means to put our equation into a slightly different form which looks like this, where a and b are real numbers:

(x+a)² + b = 0

From here, we...

This is an A* level GCSE Maths question. 'Solve' means we need to find what value x represents, but in the question this x appears on the denominator (bottom half) of the fractions which we can't use. ...

Remember the rules for differentiation?

We take each term which looks like axⁿ where a and n are just numbers and we turn it into: (an)x^n-1

So for this...