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-4*(2a-3b)=-8a+12b
5*(x² +4x-2)=5x²+20x-10
-4*(x² + 4x -2)=-4x²-16x+8
5*(2a²+3ab+4b-1)=10a²+15ab+20b-5
-4*(2a²+3ab+4b-1)=-8a²-12ab-16b+4
-4*(2a-3b)=-8a+12b
5*(x do kwadratu +4x-2)=5xkwadrat+20x-10
-4*(x do kwadratu + 4x -2)=-4xkwadrat-16x+8
5*(2a do kwadratu+3ab+4b-1)=10akwadrat+15ab+20b-5
-4*(2a do kwadratu+3ab+4b-1)=-8akwadrat-12ab-16b+4