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In a retrieve and recall question, you will need to first of all read the article you've been given, then you will need to find some key information that you think is important, and finally write around t...

There are a selection of "verbs of movement" in French which use être as their auxiliary verb in the perfect tense instead of avoir. You can remember these using the mnemonic "MRS VAN DER T...

This question is about multiplying two brackets together. There are two parts to each bracket: x, +3 and x, +5. The parts in the first b...

Completing the square is a useful method of rearranging a quadratic equation so the unknown ("x") only appears in it once. The theory of completing the square tells us that we can take a quadrat...

For a hydrocarbon (oil or gas) accumulation to form a source rock, reservoir rock and cap/seal rock are required. A trapping mechanism is also essential and this can be structural or stratigraphic. A sour...