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x in (-oo:+oo)
x = (12*x^16)/5 // - (12*x^16)/5
x-((12*x^16)/5) = 0
(-12/5)*x^16+x = 0
x-12/5*x^16 = 0
x*(1-12/5*x^15) = 0
-12/5*x^15 = -1 // : -12/5
x^15 = 5/12
x^15 = 5/12 // ^ 1/15
x = (5/12)^(1/15)
x = 0
x = 0
x in { (5/12)^(1/15), 0 }
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