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∣<31 fully simplifying each term.