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The sum of all the coefficients in the binomial expansion of (1+2x)^n is 6561. Let R=(1+2x)^n=1+F, where 1 in N and 0 lt F lt 1. IF x=1/sqrt2 then 1-F/(1+(sqrt2-1)^4)= |
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Answer» `(3sqrt2-4)` |
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