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Expanding - or geting rid of brackets. Make sure you multiply everything by everything! Correct: p² +2p -5p -10 = p² -3p -10     Wrong: p² + 2p -5 ...forgot that the -5 al...

Transcription takes place in the nucleus and is the first stage of protein synthesis. RNA polymerase attaches to the DNA double helix at the promoter sequence and unwinds the helix by breaking the hydroge...

The idea of writing an analytical essay in French can seem daunting at first but it is important to feel confident, as the long essay questions can make up a considerable percentage of the marks in ...

The easiest way to remember which of these pronouns to use is by learning the following simple rule: 'qui' comes before a verb, whereas 'que' comes before a subject noun or pronoun. For example, in the s...

Ratios are used to show how things are shared. A ratio of 7:5 means that for every 7 red sweets there are 5 blue sweets.
Step 1 - 7 + 5 = 12 This means there are 12 parts to the ratio
Step 2 -...