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The trick to writing an successful essay in the exam in the planning. Those first 5 minutes should be spend taking deep breaths and reading the questions carefully. It is a common mistake to see a topi...

F'(x)=3x^2+4x-5
F(x)=(3/(2+1))(x^(2+1))+(4/(1+1)) (x^(1+1))-5(x^(0+1))

Answer: F(x)=x^3+2x^2-5x+c

P(WW) = 5/8 x 4/7 = 20/56

P(BB) = 3/8 x 2/7 = 6/56

P(same colour) = 20/56 + 6/56 = 26/56 = 13/28 (simplified)

AB = 4DB

AC = 2DB

Find BC using Pythagoras:

BC = √(4DB)² + (2DB)²

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Before you start writing, make sure you know what you’re going to say. Take ten minutes to do a rough plan. Often the best place to start is the wording of the title – it will focus what you say on the...