Find, in ascending powers of xxx up to and including the term in x3x^3x3, the binomial expansion of
(1−3x)−2for ∣x∣<13 (1 - 3x)^{-2} \quad \text{for } |x| < \frac{1}{3} (1−3x)−2for ∣x∣<31fully simplifying each term.
108 exam-style questions on WJEC A Level Maths 1.4.1 Sequences and Series - The Binomial Theorem. Each one has a worked solution and a mark scheme showing where the marks go.