suma (-6, 2>
iloczyn (-2, 1>
A\B (-6, -2> u (1, 2>
B\A zbior pusty
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AnB=(-2,1>
A\B=(-6,-2> u (1,2>
B\A= {Ф} zbior pusty
B⊂ A
suma (-6, 2>
iloczyn (-2, 1>
A\B (-6, -2> u (1, 2>
B\A zbior pusty