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D( x )
((2*u^-5*v^2)/8)*w = 0
((2*u^-5*v^2)/8)*w = 0
((2*u^-5*v^2)/8)*w = 0
1/4*u^-5*v^2*w = 0
x należy do R
x belongs to the empty set
(((2*u^-5*v^2)/8)*w)^-2 = 0
x belongs to the empty set
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