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The first step to solving any equation is to work out what kind of equation it is. As this particular equation has only x's and numbers, and it has a x² term, we know that it is quadratic.Now t...

First, let's be clear what an argument is. An argument is a set of claims intended to establish the truth of another claim. The set of claims are the premises of the argument, and they ar...

[A] 2x + y = 18[B] x - y = 6Rearrange [A] to make y the subject 2x + y = 18minus 2x| y = 18 - 2xReplace the value y in [B] with the rear...

If we forget about the £150 more for a second then we can think of some very basic scenarios where the 5 : 2 ratio is satisfied. For example, Jon has £5 Nik has £2 or Jon has £10 Nik has £4 and so on. Fro...

Thinking of the acronym GRENADE acts as a useful guideline to include higher level evaluation, rather than the basic methodological design criticisms. It helps provide structure to your e...