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D( x )
5*u^3*y^2 = 0
20*u^5*v^4 = 0
5*u^3*y^2 = 0
5*u^3*y^2 = 0
5*u^3*y^2 = 0
x należy do R
20*u^5*v^4 = 0
20*u^5*v^4 = 0
20*u^5*v^4 = 0
x należy do R
x belongs to the empty set
((10*u^5)/(20*u^5*v^4))/(5*u^3*y^2) = 0
x belongs to the empty set
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