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Answer the following: If 6th term in the expansion of (x+*)^n is equal to "^nC_5x^(n-10) find *. |
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Answer» Solution :Let 6th TERM of `(x+y)^N` is `^nC_5x^(n-10)` ` THEREFORE "^nC_5x6(n-5)y^5 = ^nC_5x^(n-10) = ^nC_5x(n-5).x^-5` `y^5 = x^-5 = 1/x^5` `therefore y = 1/x`. HENCE = 1/x |
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