2/49z^3+1/14z^2

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Solution for 2/49z^3+1/14z^2 equation: 


z in (-oo:+oo)

(2/49)*z^3+(1/14)*z^2 = 0

2/49*z^3+1/14*z^2 = 0

1/7*z^2*(2/7*z+1/2) = 0

2/7*z+1/2 = 0 // - 1/2

2/7*z = -1/2 // : 2/7

z = -1/2/2/7

z = -7/4

(z^2)/7 = 0

1/7*z^2 = 0 // : 1/7

z^2 = 0

z = 0

z in { -7/4, 0 }

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