This is a typical Core 2 maths AS question.

I would start by explaining how a formula can be used to expand this expression and similar ones. I would then explain how to create pascal's triangle and how it can be used to simplify the method involved in solving the problem. Then I would go through the actual problem at a slow pace showing how i am using the two previous pieces of information. I think it would then be helpful if the student then has a go at another similar problem that I set for them.

The general rule for the expansion of (ax+b)^n = the sum of the terms of { nCr * ((ax)^r) * (b^(n-r)) }

At the end I would teach them how to check their answer using the calculator that you are allowed in this maths paper.

Integrate cos^2(x)

Related Maths A Level answers

Solve the simultaneous equations: x+y =2; x^2 + 2y = 12

x = 3t - 4, y = 5 - (6/t), t > 0, find "dy/dx" in terms of t

Find the gradient of the curve with the equation y = x^3+7x^2+1 at x=2

Find the binomial expansion of ((x^2) − 5)^3