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4.2 Expanding (a + bx)^n

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Question 15

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.

[4]
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4.2 Expanding (a + bx)^n Questions

  1. A Level
  2. /Maths
  3. /4.2 Expanding (a + bx)^n

99 exam-style questions on Edexcel A Level Maths 4.2 Expanding (a + bx)^n. Each one has a worked solution and a mark scheme showing where the marks go.

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