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Simplify : 4(x+5) / x^2+2x-15

Firstly, remember to factorise! x^2+2x-15 = (x+5)(x-3) ∴ the numerator and denominator now both share a common term "(x+5)", so they can cancel one another out, leaving the answer as : 4/(x-3)
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Answered by Sohum P. • Maths tutor
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How do I know what article this noun takes?

Most of the articles in German you have to learn by heart. However, there are a few word endings that can help us determine the article, e.g. -ung <---- when a noun ends with "ung", then you kno...
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Answered by Maria O. • German tutor
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Is there a set format that Oxbridge expects you to use for Personal Statements?

There is no set format that Oxbridge expects you to use for your personal statement. In fact, there is no one right way to construct a personal statement. Oxbridge, perhaps more so than other universities, i...
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Work out: 0.7 + 3/5

Show 3/5 as a decimal: 0.6 0.7 + 0.6 = 1.3 OR Show 0.7 as a fraction: 7/10 Find a common denominator: 3/5 = 6/107/10 + 6/10 = 13/10 or 1 and 3/10
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Answered by Edward B. • Maths tutor
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Solve the following simultaneous equations: 2x + 2y = 14; 4x - 2y = 10

By Elimination: We can add the equations together because +2y and -2y will cancel out: 2x + 4x = 14 + 10 This gives 6x = 24, so x = 4 We can put x back into one of the simultaneous equations: 2(4) + 2y = 14 ...
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Answered by Edward B. • Maths tutor
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