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It is first important to get the equation to equal 0, so to do this you minus 12 from each side of the equals symbol, giving youX^2 +13X+36=0Now it is time to think about factorising!The best trick for th...

The way that papers are set is that you usually can allow just over a minute for each mark. This means if a question is 6 marks, it should take about 6 minutes to answer. It is generally a good idea to be...

To solve this problem, the maximum and minimum points of equations can be deduced through the differentiation process. This looks at the gradient of the function and the maximum/minimum value occurs wh...

To find the factors of x³-7x-6, a method called equating coefficients can be used.

Firstly, set the equation to zero and find a suitable number which satisfies the equation, in...

there are a few main ways to solve simultaneous equations: find an equal like term. In this case y and add or subtract the two equations together to isolate one of x or y. 

Another way of...