Binomial Theorem - Finding Parameters in Binomial Expansions

Binomial Theorem - Finding Parameters in Binomial Expansions

IP 4

Given that \({{\left( 1-2x \right)}^{n}}=1-ax+84{{x}^{2}}-...\), where \(n>0\), find the value of \(n\) and of \(a\).

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Answer:\(n=7,\ a=14\)

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