The ratio of the coefficient of the middle term in the expansion of (1+x)²? and the sum of the coefficients of two middle terms in expansion of (1+x)¹? is…….
The ratio of the coefficient of the middle term in the expansion of (1+x)²? and the sum of the coefficients of two middle terms in expansion of (1+x)¹? is…….
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1 Answer
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Ratio = ²? C? / (¹? C? + ¹? C? ) = ²? C? / ²? C? = 1.
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