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Prove that the ratio of the coefficient of x^10 in (1 – x^2)^10 & the term independent of x in (x-2/x)^10 is 1: 32.

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Prove that the ratio of the coefficient of x10 in (1 – x2)10 & the term independent of x in (x-2/x)10  is 1: 32.

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Ratio of both coefficients 

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