7/15x^3+4/3x

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Solution for 7/15x^3+4/3x equation: 


x in (-oo:+oo)

(7/15)*x^3+(4/3)*x = 0

7/15*x^3+4/3*x = 0

1/3*x*(7/5*x^2+4) = 0

7/5*x^2 = -4 // : 7/5

x^2 = -20/7

x/3 = 0

1/3*x = 0 // : 1/3

x = 0

x = 0

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