6r-5/6r^3-12r^2-48r

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Solution for 6r-5/6r^3-12r^2-48r equation: 


r in (-oo:+oo)

6*r-((5/6)*r^3)-(12*r^2)-(48*r) = 0

(-5/6)*r^3-12*r^2+6*r-48*r = 0

-5/6*r^3-12*r^2-42*r = 0

-r*(5/6*r^2+12*r+42) = 0

5/6*r^2+12*r+42 = 0

DELTA = 12^2-(5/6*4*42)

DELTA = 4

DELTA > 0

r = (4^(1/2)-12)/(5/6*2) or r = (-4^(1/2)-12)/(5/6*2)

r = -6 or r = -42/5

-r = 0

-1*r = 0 // : -1

r = 0

r in { -42/5, -6, 0 }

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