y = [(x^2+1) /(x^2-1) ]^3 ???
what do you want, the derivative?
if so
dy/dx = 3[(x^2+1) /(x^2-1) ]^2 * { (x^2-1)2x -(x^2+1)2x}/ (x^2-1)^2
etc, multiply out and simplify
Y=(XSQUARE + 1
OVER
XSQUARE - 1) CLOSE PARENTHESIS TO THE 3 POWER...
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