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factorise and simplify (x^2+4x+4)/(3x^2+15x+18)

Factorise: Top (x^2+4x+4) = (x+2)^2Bottom (3x^2+15x+18) = 3(x^2+5x+6) = 3(x+3)(x+2)Simplify: ((x+2)^2)/(3(x+3)(x+2)) = (x+2)/(3(x+3))
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Answered by Nikita S. • Maths tutor
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Explain how polymerase chain reaction is used in DNA fingerprinting

DNA extracted from a crime scene is normally available in small quantities so PCR can be used to amplify this quantity to a reasonable concentration which can then be used to run a gel electrophoresis to ide...
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Answered by Nikita S. • Biology tutor
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Explain how one study demonstrates localization of function in the brain.

The brain is seen as the command centre of human activity and therefore, psychologists aim to develop a deeper understanding of its role and how it matures, develops and adapts over lifetime. Prior to the de...
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How do I expand (2x+5)(9x-2)?

First, remember that a set of closed brackets directly beside a single term/another set indicates that they are being multiplied. The key to expansions like this is to do it a particular order every time to ...
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Answered by Meron E. • Maths tutor
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Explain how at least 2 literary pieces have portrayed a social group in a particular way. How might the contexts of these authors have influenced the portrayals of these groups?

(I will not write an entire answer as this is expected to be in essay form therefore I wouldn't be able to cover all of the response required)Introduction:Establish the texts being used and in particular the...
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