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n-4-x-2-2x-3-2-x-x-2-4-




Question Number 85351 by naka3546 last updated on 21/Mar/20
Σ_(n= 4) ^∞   ((x^2 +2x+3)/(2^x (x^2  + 4)))  =  ?
n=4x2+2x+32x(x2+4)=?

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