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Prove why the quadratic formula works

The quadratic formula is x = [- b ± √( b 2 - 4 ac )]/2 a (1) , where a,b and c are the coefficents of a quadratic in the form a x^2+ b x+ c =0 (2) . To prove that this works we need to start from equation (2...
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Answered by Jake R. • Maths tutor
6975 Views

When should I use the passé simple?

The passé simple , or the 'past historic', is a very irregular past tense that is rarely used in spoken French. It indicates a highly literary style, and is therefore only heard in formal speeches, such as t...
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Answered by Rachael S. • French tutor
11940 Views

How to learn a Latin GCSE set text?

Merely memorising a set text is neither fun nor advisable as you could be given any section in the exam. To really understand what the author means, as well as be able to translate it, you should read the La...
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Answered by Alice D. • Latin tutor
18056 Views

Savoir vs. Connaître - How to know the difference?

Unlike the English language where one verb 'to know' is sufficient, it can be quite difficult to remember which one to use in French. So here are some simple rules to get you started! Firstly, let's look at ...
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Answered by Jamie A. • French tutor
4456 Views

How do you address a compare and contrast essay?

With these essay questions, its important to mention both similarities and differences within the two extracts to obtain maximum marks. The two main words within the question 'compare' and 'contrast' highlig...
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3383 Views