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x in (-oo:+oo)
Y = (2*x^128)/52 // - (2*x^128)/52
Y-((2*x^128)/52) = 0
Y+(-1/26)*x^128 = 0
-1/26*x^128 = -Y // : -1/26
x^128 = 26*Y
x^128 = 26*Y // ^ 1/128
abs(x) = 26^(1/128)*Y^(1/128)
x = 26^(1/128)*Y^(1/128) or x = -(26^(1/128)*Y^(1/128))
x in { 26^(1/128)*Y^(1/128), -(26^(1/128)*Y^(1/128)) }
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