2.
б) 18c-18b+yc-yb
18(c-b)+y(c-b)
(c-b)(18+y)
3.
1) 0,5m(2m^2-1)(4m^2+9)
0,5m(2m^2-1)(2m+3)(2m-3)
1m^3-0,5m(2m+3)(2m-3)
2) = 18(с-b)-y(c-b)=(c-b)(18-y)
3) =0,5m(8m^4+18m^2-4m^2-9)=4m^5+9m^3-2m^3-4,5=4m^5+7m^3-4,5
2.
б) 18c-18b+yc-yb
18(c-b)+y(c-b)
(c-b)(18+y)
3.
1) 0,5m(2m^2-1)(4m^2+9)
0,5m(2m^2-1)(2m+3)(2m-3)
1m^3-0,5m(2m+3)(2m-3)
2) = 18(с-b)-y(c-b)=(c-b)(18-y)
3) =0,5m(8m^4+18m^2-4m^2-9)=4m^5+9m^3-2m^3-4,5=4m^5+7m^3-4,5