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How do I expand a bracket to a negative power if it doesn't start with a 1.

Okay so consider (2 + x)^-1, we can only do the expansion we know if the bracket starts with a 1, to fix this we can factor a 2 out of the bracket so that it becomes (2(1 + x/2))^-1. Then by our rules of ...

Answered by Shaun M. • Maths tutor

3996 Views

How should we answer a compare and contrast question in our Language exam?

Approach this question as if you’re having an argument with yourself about what the author meant and why, in which neither side agrees or will budge. The stronger side will shine through. Do not panic!

Answered by Jake H. • English tutor

9376 Views

how to have the best structure when answering sociology questions in exam papers?

following a certain set structure PEC, for example your point of argument, then give examples such as what marxist would say about this point and Then COMMENT on what it is about with a point of counterac...

Answered by Meryl T. • Sociology tutor

2865 Views

What are the differences between DNA and RNA

There are 4 main differences, the first being that DNA is in a double helix structure much like two pieces of string wrapped together. RNA, on the other hand, is single-stranded. The second difference is ...

Answered by Arif A. • Biology tutor

2348 Views

What is proof by induction and how do I employ it?

Proof by induction is a type of proof in which one tries to proof a statement is valid for any arbitrary number of n by first proving for k and then trying to further extrapolate this into a valid stateme...

Answered by Adrian B. • Maths tutor

1493 Views