Odpowiedź
[tex]-2x(5x-y)-x(8x-2y)=-10x^{2} +2xy-8x^{2} +2xy=-18x^{2} +2xy\\\\5p(2+3r-p)-3p(2p-4)=10p+15pr-5p^{2} -6p^{2} +12p=-11p^{2} +22p+12pr\\\\3k(4-5m+2k)-3m(2-3k)=12k-15km+6k^{2} -6m+9km=\\=6k^{2} +12k-6m-6km[/tex]
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Odpowiedź
[tex]-2x(5x-y)-x(8x-2y)=-10x^{2} +2xy-8x^{2} +2xy=-18x^{2} +2xy\\\\5p(2+3r-p)-3p(2p-4)=10p+15pr-5p^{2} -6p^{2} +12p=-11p^{2} +22p+12pr\\\\3k(4-5m+2k)-3m(2-3k)=12k-15km+6k^{2} -6m+9km=\\=6k^{2} +12k-6m-6km[/tex]