C2 Edexcel June 2017 Question 1 | Binomial Series & Expansion

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This C2 paper was considerably easier than some other past papers that I have done.

youreapacman
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when is the rest of the past paper coming out?

saffahyaqoob
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I forgot to do 3^5 and multiply all the terms by it. Will I lose 2 marks? :(

tikshio
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this is binomial expansion? why not just (more simply) : 3^5 + 5C1.3^4.(-x/3) + 5C2.3^3.(x^2 / 9) + 5C3.3^2.(-x^3 /27) ??

= 243 -5.81.x/3 + 10.27.x^2 / 9 - 10.9.x^3 /27
= 243 - 135x + 30x^2 - 10x^3 / 3

.... which IS the binomial expansion for Natural n.

TheBegbiesan
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Can anyone tell me the questions please, I need it within hours thx

nathanieong