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21/4-(2*x^36) = 0
21/4-2*x^36 = 0
-2*x^36 = -21/4 // : -2
x^36 = 21/8
x^36 = 21/8 // ^ 1/36
abs(x) = (21/8)^(1/36)
x = (21/8)^(1/36) or x = -(21/8)^(1/36)
x in { (21/8)^(1/36), -(21/8)^(1/36) }
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