1. Przekszatłć wyrażenia algebraiczne do najprostszej postaci . -(k-m-n)+2(k+2m+3n)-kmn = 2. 2p(3p-2r)+3r(p-2r)= 3. (a+2ab+b)-(a-2ab)+b= 4.(ay-3a*5y-5 i dwie trzecie )-(4ay-3 i dwie trzecie)= 5.(a+2s)- jedna duga (a-2s)

1. -(k-m-n)+2(k+2m+3n)-kmn = -k+m+n+2k+4m+6n-kmn = k+5m+7n-kmn 2. 2p(3p-2r)+3r(p-2r) = 6p²-4pr+3pr-6r² = 6p²-pr-6r² 3. (a+2ab+b)-(a-2ab)+b = a+2ab+b-a+2ab+b = 4ab+2b 4. (ay-3a*5y-5⅔ )-(4ay-3⅔) = ay-15ay-5⅔ -4ay+3⅔ = -18ay-2 5. (a+2s)- ½(a-2s) = a+2s-½a+s = ½a+3s