AQA C4 2012 January — Question 3

Exam BoardAQA
ModuleC4 (Core Mathematics 4)
Year2012
SessionJanuary
TopicGeneralised Binomial Theorem
TypeFactoring out constants first

3
  1. Find the binomial expansion of \(( 1 + 6 x ) ^ { \frac { 2 } { 3 } }\) up to and including the term in \(x ^ { 2 }\).
    (2 marks)
  2. Find the binomial expansion of \(( 8 + 6 x ) ^ { \frac { 2 } { 3 } }\) up to and including the term in \(x ^ { 2 }\).
    (3 marks)
  3. Use your answer from part (b) to find an estimate for \(\sqrt [ 3 ] { 100 }\) in the form \(\frac { a } { b }\), where \(a\) and \(b\) are integers.
    (2 marks)