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(4-x)^-1/2 = (4 (1 - x/4))^-1/2 = 1/2 (1 - x/4)^-1/2 = 1/2 ( 1 + x/8 + 3x²/128 + ...) = 1/2 + x/16 + 3x²/256 + ...Therefore the first three ter...

Refer to question taken from Edexcel Maths Paper.

with quadratic equations you will either get two x values for your answer, one value or zero values. This can be tested by rhe value of your discriminant when values have been subbed in. If it’s greater t...

UK Medical schools have various methods of interviewing candidates. The interview may be in the form of an MMI, panel or group. I feel it 's vital to help students tailor their applications clearly to the...

The first step is reinstate the context whereby the interviewer asks the eyewitness to mentally and physically imagine and recall the crime scene including environmental context of crime scene e.g. smell,...