[tex]2xy-2-5xy-x=-3xy-x-2\ \ \ \ \ \ Tak\\\\\\2p(5p^2-5p+3r-4)=10p^2-10p+6r-8\ \ \ \ \ \ Nie\\\\2p(5p^2-5p+3r-4)=10p^3-10p^2+6pr-8p\\\\\\(3-6a)(2a-b)=6a+6ab\ \ \ \ \ \ Nie\\\\(3-6a)(2a-b)=3\cdot2a-3b-6a\cdot2a-6a\cdot(-b)=6a-3b-12a^2+6ab[/tex]
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[tex]2xy-2-5xy-x=-3xy-x-2\ \ \ \ \ \ Tak\\\\\\2p(5p^2-5p+3r-4)=10p^2-10p+6r-8\ \ \ \ \ \ Nie\\\\2p(5p^2-5p+3r-4)=10p^3-10p^2+6pr-8p\\\\\\(3-6a)(2a-b)=6a+6ab\ \ \ \ \ \ Nie\\\\(3-6a)(2a-b)=3\cdot2a-3b-6a\cdot2a-6a\cdot(-b)=6a-3b-12a^2+6ab[/tex]