-2r^3/2=-54

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Solution for -2r^3/2=-54 equation: 


r in (-oo:+oo)

(-2*r^3)/2 = -54 // + 54

(-2*r^3)/2+54 = 0

-1*r^3 = -54 // : -1

r^3 = 54

r^3 = 54 // ^ 1/3

r = 3*2^(1/3)

r = 3*2^(1/3)

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