Oblicz : -2x(do kwadratu)*y zastąp x=-1 y=-2
-2 * (-1)do kwadr. *(-2)
-2 * 1 * (-2) = 4
-2*-1(kwadrat)*-2=-2*1*-2=-2*-2=4
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-2 * (-1)do kwadr. *(-2)
-2 * 1 * (-2) = 4
-2*-1(kwadrat)*-2=-2*1*-2=-2*-2=4