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4*x^2*x^4*x^213-((1/2)*x^23) = 0
4*x^2*x^4*x^213+(-1/2)*x^23 = 0
4*x^219-1/2*x^23 = 0
x^23*(4*x^196-1/2) = 0
4*x^196 = 1/2 // : 4
x^196 = 1/8
x^196 = 1/8 // ^ 1/196
abs(x) = (1/8)^(1/196)
x = (1/8)^(1/196) or x = -(1/8)^(1/196)
x^23 = 0
1*x^23 = 0 // : 1
x^23 = 0
x = 0
x in { (1/8)^(1/196), -(1/8)^(1/196), 0 }
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