(2r^3+r^2+r)/4r^2

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Solution for (2r^3+r^2+r)/4r^2 equation: 


r in (-oo:+oo)

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

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

2*r^3+r^2+r = 0

r*(2*r^2+r+1) = 0

2*r^2+r+1 = 0

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

DELTA = -7

DELTA < 0

r = 0

(r*r^2)/4 = 0

( r )

r = 0

( r^2 )

1*r^2 = 0 // : 1

r^2 = 0

r = 0

r in { 0, 0 }

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