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(4/2)*x^9-((3*x^2)/2) = 0
(4/2)*x^9+(-3/2)*x^2 = 0
2*x^9-3/2*x^2 = 0
x^2*(2*x^7-3/2) = 0
2*x^7 = 3/2 // : 2
x^7 = 3/4
x^7 = 3/4 // ^ 1/7
x = (3/4)^(1/7)
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in { (3/4)^(1/7), 0 }
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