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Given that the binomial expansion of (1 + kx) ^ n is 1 - 6x + 30x^2 + ..., find the values of n and k.

Setting (1 + kx) n equal to 1 - 6x + 30x 2 + ..., the binomial expansion can be applied to the LHS, by making use of the formula provided in the formula book. In this case, where x appears in the formula boo...
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Answered by Sanchit G. • Maths tutor
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How do you form the passive voice?

Firstly, let’s explain what the active voice is: it’s where the subject of the sentence performs the action of the verb (this is the type of sentence you’re most familiar with).The passive voice is basically...
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Answered by Katerina J. • French tutor
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Describe three ways of synthesising DNA fragments and how they are amplified:

I would ask the tutee when considering an answer to divide the question in two to ensure not one part of it is overlooked but give the answer as a whole.Part 1 Conversion of mRNA into cDNA using reverse tran...
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Answered by Ben G. • Human Biology tutor
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To what extent is ecotourism sustainable?

Introduction: Start by defining what ecotourism is."Ecotourism is responsible travel to places in an attempt to minimise environmental damage".Explore what it means to be sustainable: To meet the n...
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Answered by Matilda O. • Geography tutor
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What is a vector quantity

A vector quantity is a quantity that has both a magnitude and a direction.
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Answered by Tobias E. • Physics tutor
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