Additional Mathematics 0606 / Series / 1.11.1: Binomial expansion and coefficient of x4x^4x40606/11/M/J/18 — Question 9 · 6 marks · BinomialMark as done · Save for later · Show all solutions(i)Find the first 3 terms in the expansion of (2x−116x)8\left(2x - \tfrac{1}{16x}\right)^{8}(2x−16x1)8 in descending powers of xxx.[3]▸ Answer(ii)Hence find the coefficient of x4x^{4}x4 in the expansion of (2x−116x)8(1x2+1)2\left(2x - \tfrac{1}{16x}\right)^{8}\left(\tfrac{1}{x^{2}} + 1\right)^{2}(2x−16x1)8(x21+1)2.[3]▸ Answer▸ Official mark scheme← 1.21: Binomial coefficient and independent term1.9: Binomial coefficients and independent term →
