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D( x )
4*a^3*b = 0
4*a^3*b = 0
4*a^3*b = 0
4*a^3*b = 0
x naleu017Cy do R
x belongs to the empty set
(12*a^6*b^6-(16*a^12*b^7)+8*a^6*b^2)/(4*a^3*b) = 0
x belongs to the empty set
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