-3x-7x/5=5x-(x3)

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Solution for -3x-7x/5=5x-(x3) equation: 


x in (-oo:+oo)

-3*x-((7*x)/5) = 5*x-x^3 // - 5*x-x^3

x^3-3*x-((7*x)/5)-(5*x) = 0

x^3-3*x+(-7/5)*x-5*x = 0

x^3-47/5*x = 0

x*(x^2-47/5) = 0

1*x^2 = 47/5 // : 1

x^2 = 47/5

x^2 = 47/5 // ^ 1/2

abs(x) = (47/5)^(1/2)

x = (47/5)^(1/2) or x = -(47/5)^(1/2)

x = 0

x = 0

x in { (47/5)^(1/2), -(47/5)^(1/2), 0 }

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