Question:
In the expansion \({\left( {3{x^2} – y} \right)^{10}}\), the coefficient of the middle term is:
Reference explanation:
Correct Answer: EASY
In the expansion \({\left( {3{x^2} – y} \right)^{10}}\) there are 11 terms in all, so the middle term is the th term.
So the coefficient of the middle term is \(- {3^5}.C_{10}^5\).
ADSENSE
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