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(x-4) x (2x +3y)²
(x-4) x (4x²+12xy +9y²)
4x³+12x²y + 9xy² -16x²-48xy - 36y² ...

A discursive essay at A-Level will usually be on some sort of controversial topic, such as marijuana legalisation, the sugar tax or deforestation. There will be two sides and you ought to take one side as...

If you're writing an essay on a film's theme, you need to demonstrate that you have a good understanding of the director's intentions, the film's message and, of course, knowledge of important quotes that...

The past tense you are talking about is called the 'past perfect.' This means that it would be used to describe something you did once at a specific point, like a sport you played last weekend, or somethi...

Now the first thing to point out when looking at images under an electron microscope is the scale. For example, something that you draw as 3cm long, may in fact be 10, 000 times smaller in real life. So i...