4x^3/15-5x

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Solution for 4x^3/15-5x equation: 


x in (-oo:+oo)

(4*x^3)/15-(5*x) = 0

(4*x^3)/15-5*x = 0

4/15*x^3-5*x = 0

x*(4/15*x^2-5) = 0

4/15*x^2 = 5 // : 4/15

x^2 = 75/4

x^2 = 75/4 // ^ 1/2

abs(x) = (75/4)^(1/2)

x = (75/4)^(1/2) or x = -(75/4)^(1/2)

x = 0

x = 0

x in { (75/4)^(1/2), -(75/4)^(1/2), 0 }

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