5k3+5k2+9k/9k3

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Solution for 5k3+5k2+9k/9k3 equation: 


k in (-oo:+oo)

((9*k)/9)*k^3+5*k^3+5*k^2 = 0

k^4+5*k^3+5*k^2 = 0

k^2*(k^2+5*k+5) = 0

k^2+5*k+5 = 0

DELTA = 5^2-(1*4*5)

DELTA = 5

DELTA > 0

k = (5^(1/2)-5)/(1*2) or k = (-5^(1/2)-5)/(1*2)

k = (5^(1/2)-5)/2 or k = (-(5^(1/2)+5))/2

k^2 = 0

1*k^2 = 0 // : 1

k^2 = 0

k = 0

k in { (-(5^(1/2)+5))/2, (5^(1/2)-5)/2, 0 }

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