r^2/3-12r^1/3+20=0

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Solution for r^2/3-12r^1/3+20=0 equation: 


r in (-oo:+oo)

(r^2)/3-((12*r^1)/3)+20 = 0

(r^2)/3-4*r+20 = 0

1/3*r^2-4*r+20 = 0

DELTA = (-4)^2-(1/3*4*20)

DELTA = -32/3

DELTA < 0

r belongs to the empty set

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