((a + sqrt(a^2-4))/2)^5 +((a + sqrt(a^2-4))/2)^-5 -(a^5 -5*a^3 +5a)((a + sqrt(a^2-4))/2)^5 +((a + sqrt(a^2-4))/2)^-5 -(a^5 -5*a^3 +5a)

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