Binomial Theorem - Coefficients in Products of Binomial Expansions

Binomial Theorem - Coefficients in Products of Binomial Expansions

TGM Original Questions
  1. By considering the general term in the binomial expansion of \({{\left( \frac{3}{{{x}^{5}}}-\frac{x}{2} \right)}^{6}}\), explain why there are only two of non-negative powers of \(x\) in this expansion.
  2. Find the term independent of \(x\) in the expansion of \(\left( 6-\frac{5}{{{x}^{2}}} \right){{\left( \frac{3}{{{x}^{5}}}-\frac{x}{2} \right)}^{6}}\).

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Answer:(a) The only two non-negative powers are \(0\) and \(6\) (b) \( -\frac{27}{8}\)

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