(35a³-28a⁴):7a³
35a³-28a⁴/7 *a³
7(5a³-4a⁴)/7 *a³
(5a³-4a⁴)*a³
5a⁶-4a⁷
A) 7,5-(3,7)=7,5+3,7=11,2
б)-2,3-6,2=-8,5
2.61 2)=3х+24 4)=5р-50 6)=3m+12n 8)=42p-105q
2.62 2)=bx-by 4)=6xy-2y² 6)=-12ab-6a² 8)=8m²+8mn
2.63 2)=-2x³+2x²-2x 4)=3b³-b²+4b 6)=-6a³b+21a²b²+3ab³
8)=3m³n+1,5 mn -2mn³