Вопрос пользователя:
(4m+7)(7-4m)-(4m-7)^2 представьте в виде многочлена
Илюха отвечает:
(4m+7)(7-4m)-(4m-7)^2 = (7 +4m)(7-4m)-(4m-7)^2 = 7^2 – (4m)^2 – 16m^2 – 56m + 49 = 49 – 16m^2 – 56m + 49 = -16m^2 – 56m + 98 = 16m^2 + 56m – 98
(4m+7)(7-4m)-(4m-7)^2 представьте в виде многочлена
(4m+7)(7-4m)-(4m-7)^2 = (7 +4m)(7-4m)-(4m-7)^2 = 7^2 – (4m)^2 – 16m^2 – 56m + 49 = 49 – 16m^2 – 56m + 49 = -16m^2 – 56m + 98 = 16m^2 + 56m – 98