(В+2)(в-5)-(в+4)^2
(m-1)(m^2+m+1)-m^3
Упростите

(b+2)(b-5) -(b+4)² =b² -5b +2b -10 -(b² +8b +16) =b² -3b -10 -b² -8b -16 = -11b -26(m -1)(m² +m +1) -m^3 =(m^3 -1) -m^3 = m^3 -1 -m^3 = -1