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Which value of x gives the greatest value of "-x^2+8x-6"

There are 2 methods of solving this: completing the square or calculus, which makes this a versatile question for both GCSE and A Level students. It is also fairly simple to adapt. Using calculus, the equati...
TD
Answered by Tutor172970 D. • Maths tutor
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Outline one or more ways in which behaviourists treat phobias (6 marks)

Systematic desensitisation is one of the main behavioural treatments for phobias. It is based on classical conditioning, with a focus on counterconditioning the specific phobia, i.e. unlearn the maladaptive ...
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Answered by Sophie D. • Psychology tutor
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Solve the simultaneous equations: 3x + y = 19 and x - 2y = -3

First rearrange x - 2y = -3 by adding 2y to each side to give x = -3 + 2ySubstitute this into the first eq. to give 3(-3 +2y) + y = 19Expand brackets first: -9 + 6y + y = 19Rearrange and simplify by collecti...
JM
Answered by Jessica M. • Maths tutor
5812 Views

How can I write a good introduction

An introduction begins an essay in the most clear and concise way possible. It's important to immediately state what texts you'll be analysing and refer to any authors using their whole name the first time. ...
KL
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Is the concept of power central to our understanding of global politics?

Power is a key concept within international relations and the global sphere. This essay aims to evaluate the means through which power can be exerted and the centrality of power within global politics. Hard ...
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Answered by Caitlin B. • Politics tutor
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