CAIE P1 2015 November — Question 2

Exam BoardCAIE
ModuleP1 (Pure Mathematics 1)
Year2015
SessionNovember
TopicBinomial Theorem (positive integer n)
TypeRatio of coefficients condition
2 In the expansion of \(( x + 2 k ) ^ { 7 }\), where \(k\) is a non-zero constant, the coefficients of \(x ^ { 4 }\) and \(x ^ { 5 }\) are equal. Find the value of \(k\).
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