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Write (√(18)+10)/√(2) in the form: p + q√2 [4 marks]

First, simplify √18 by writing it as √(9x2) = √9 x √2 = 3√2. Then, rationalise the denominator by multiplying both top and bottom of the fraction by √2. This gives √2 x √2 = 2 in the denominator, and (3√2+10...
AC
Answered by Abby C. • Maths tutor
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How do I use critics effectively?

Most people use critics to support an argument, showing that they have come up with valid points and have read widely around the subject. However to push this further the key word for me is engage. You must ...
EK
Answered by Elizabeth K. • English tutor
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How do I know what quotations to learn and how do I learn them?

For the first part of this question it is important to think about key themes and characters and group your quotations accordingly. Don't try to learn whole passages. More often than not the shorter, memorab...
EK
Answered by Elizabeth K. • English tutor
3171 Views

Can you suggest any useful resources for listening and/or reading practice?

Obviously past papers are key for practice at GCSE. Even old style practice papers are still useful. However it is not enough to just get answers wrong and move on. It is more useful to look up all the vocab...
EK
Answered by Elizabeth K. • French tutor
3408 Views

Prove that tan^2(x)=1/(cos^2(x))-1

tan^2(x)=1/(cos^2(x))-1 Left hand side of the equation (LHS)=tan^2(x) Use the identity tan(x)=sin(x)/cos(x) and substitute it into the LHS LHS=sin^2(x)/cos^2(x) Use the identity sin^2(x)+cos^2(x)=1 and rearr...
PA
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