X2n (xn + x-n)2 – (1 + x4n) (-1)n + (-1)n+2 2(-1)n + (-1)n+1
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Is it 1) x2n(xn+(-nx))2 -(1 +x4n) or 2) 2xn(xn + n - x)2 -(1 + 4xn) either way i provide answers for both 1) 2xn(0)2 -(1+4xn) -(1+ 4xn) 2) {(2x^2n^2) +(2xn^2) -(2x^2n)}2 -(1 + 4xn) (4x^2n^2) + (4xn^2) -(4x^2n) - 1 + 4xn Hope that helps
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