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How can you expand brackets? e.g: (x-4)(x+7)

The answer is of the form ax2+bx+c The a term is found by the product of the coefficients of the x in the brackets. e.g (2x+7)(-4x+6) would give -8

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Answered by Sam T. • Maths tutor
5561 Views

How should I structure my essays?

Bearing in mind that you will have no more than 30-45 minutes to write an essay, your answer will have to be concise and selective. Answers that score highly are those that directly address the question. ...

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Answered by Alice D. • History tutor
2571 Views

How does crossing over occur during meiosis?

Genetic variation is important because it allows natural selection to act on the population. Individuals that inherit advantagous alleles are more likely to survive and successfully reproduce. Crossing ov...

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Answered by Tamara A. • Biology tutor
14180 Views

What makes up a DNA nucleotide?

-A phospate group  -A hexose sugar (deoxyribose) -A nitrogenous base (A, G, C or T)

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Answered by Augusta T. • Biology tutor
3785 Views

What are Oxford and Cambridge looking for in a personal statement?

The Oxbridge personal statement style is slightly different from that of other universities, and it is important that you don’t cater your statement towards one university in particular. While it is true ...

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5626 Views

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