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D( x )
(a^2*b^3*c^4)/(a^-2*b^-3*c^-4) = 0
a^-2*b^-3*c^-4 = 0
(a^2*b^3*c^4)/(a^-2*b^-3*c^-4) = 0
(a^2*b^3*c^4)/(a^-2*b^-3*c^-4) = 0
a^4*b^6*c^8 = 0
x naleu017Cy do R
a^-2*b^-3*c^-4 = 0
a^-2*b^-3*c^-4 = 0
a^-2*b^-3*c^-4 = 0
x naleu017Cy do R
x belongs to the empty set
((a^2*b^3*c^4)/(a^-2*b^-3*c^-4))^-2 = 0
x belongs to the empty set
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