OCR C4 2015 June — Question 4

Exam BoardOCR
ModuleC4 (Core Mathematics 4)
Year2015
SessionJune
TopicGeneralised Binomial Theorem
TypeFactoring out constants first

4
  1. Find the first three terms in the binomial expansion of \(( 8 - 9 x ) ^ { \frac { 2 } { 3 } }\) in ascending powers of \(x\).
  2. State the set of values of \(x\) for which this expansion is valid.