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D( x )
2*a^7*b^2 = 0
2*a^7*b^2 = 0
2*a^7*b^2 = 0
2*a^7*b^2 = 0
x należy do R
x belongs to the empty set
((3*a^5)/(2*a^7*b^2))^3 = 0
x belongs to the empty set
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