Find the first three terms of the expansion of (k−4x3)13\displaystyle (k - 4x^3)^{\frac{1}{3}}(k−4x3)31 in ascending powers of xxx, giving your answer in terms of kkk, where k k\,k is a positive constant.
408 exam-style questions on Edexcel A Level Maths Binomial Expansion, covering 4.1 Expanding (1 + x)^n, 4.2 Expanding (a + bx)^n, and 4.3 Using Partial Fractions. Each one has a worked solution and a mark scheme showing where the marks go.