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(x^3)/5-4 = 2 // - 2
(x^3)/5-4-2 = 0
1/5*x^3 = 6 // : 1/5
x^3 = 30
x^3 = 30 // ^ 1/3
x = 30^(1/3)
x = 30^(1/3)
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