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D( x )
a^4*((3*a^-4*b^4)/6)*b^7 = 0
a^4*((3*a^-4*b^4)/6)*b^7 = 0
a^4*((3*a^-4*b^4)/6)*b^7 = 0
1/2*b^11 = 0
x naleu017Cy do R
x belongs to the empty set
(a^4*((3*a^-4*b^4)/6)*b^7)^-3 = 0
x belongs to the empty set
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