Find the first three terms of the expansion of (1+3x3)13\displaystyle (1 + 3x^3)^{\frac{1}{3}}(1+3x3)31 in ascending powers of xxx.
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.