5/9z^3+1/15z^2

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Solution for 5/9z^3+1/15z^2 equation: 


z in (-oo:+oo)

(5/9)*z^3+(1/15)*z^2 = 0

5/9*z^3+1/15*z^2 = 0

1/3*z^2*(5/3*z+1/5) = 0

5/3*z+1/5 = 0 // - 1/5

5/3*z = -1/5 // : 5/3

z = -1/5/5/3

z = -3/25

(z^2)/3 = 0

1/3*z^2 = 0 // : 1/3

z^2 = 0

z = 0

z in { -3/25, 0 }

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