Объяснение:
64^3+(3a-1)^3=(64+3а-1)*(4096-64(3а-1)+(3а-1)^2)=(63+3а)*(4096-192а+64+9а^2-6а+1)=3(21+а)*(4161-198а+9а^2)=3(21+а)*3(1387-66а+3а^2)=3*3(21+а)*(1387-66а+3а^2)=9(21+а)*(1387-66а+3а^2)
Объяснение:
64^3+(3a-1)^3=(64+3а-1)*(4096-64(3а-1)+(3а-1)^2)=(63+3а)*(4096-192а+64+9а^2-6а+1)=3(21+а)*(4161-198а+9а^2)=3(21+а)*3(1387-66а+3а^2)=3*3(21+а)*(1387-66а+3а^2)=9(21+а)*(1387-66а+3а^2)