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Calculate (7 + √3)(7 - √3)

(7 + √3)(7 - √3) = 7 2 + 7√3 - 7√3 - (√3) 2 = 49 - 3 = 46Alternatively you can go straight to identifying that this is the difference between two squares, using the fact that (a + b)(a - b) = a 2 - b 2
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Answered by Isabel B. • Maths tutor
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State the interval for which sin x is a decreasing function for 0⁰ ≤ x ≤ 360⁰.

Draw a diagram of the graph y=sin x between the stated interval. Identify the two extrema. Required interval is in between the two points.
Answered by • Maths tutor
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How do I answer a question that starts with 'In light of this view'?

This opening is one of a few standard question stems that exam boards use when phrasing questions. Other question stems may include 'How far do you agree', or 'Discuss how...' etc. To answer a question that ...
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Answered by Rachel T. • English tutor
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What context should I include in an essay on the Romantic poets?

Context for the Romantic poets can be quite straightforward as you can often reuse information for different poets. This is because they all lived in similar locations and at similar times, so the events tha...
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Answered by Megan M. • English tutor
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With close reference to the language and imagery in this extract, examine Shakespeare's presentation of Goneril at this point in the play.

At the beginning of the extract, Goneril is presented to be frustrated and outraged. In particular, this can be seen by the repetition of the phrase 'a hundred knights'. Overall, the phrase appears three tim...
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