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The question is asking us to simplify; in particular, we have to simplify a fraction. We simplify a fraction by cancelling a factor from both the numerator and the denominator. We can apply this algebraic...

I would begin the session with checking a basic understanding of the methods of long division, as these will not have been taught very recently. Many students will have been using short division, as it is...

• Create a revision timetable. It doesn't have to be to the hour, but make sure to write down all the topics you need to cover. For example, during my A-levels I'd do one mini topic e...

An enzyme is a catalyst / which speeds up a reaction. It's a protein and/or it's specific (due to its active site)

There are many reasons behind Stalin's rise to power. After the death of Vladimir Lenin in 1924, there was a power vacuum created with in the Communist Party. Many people believed that the natural heir to...