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(x^2-1)*(x^2+25)+10*x*(x^2-1) = 0;x
x
(-3*x)/(x^2+1)
(4)^(2016)
(x^2-1)*(x^2+25)+10*x*(x^2-1) = 0;x
x
(-3*x)/(x^2)+1
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