Нуралы (cos⁴(x) - sin⁴(x))(cos⁴(x) + sin⁴(x)) = (cos(x) - sin(x))(cos(x) + sin(x))(((cos(x) + sin(x))-1/2sin(2x)) = cos(2x)*(1/2*(cos(2x) + 1)) = m*(1/2*(m + 1) = m(1/2m + 1/2) = 1/2m + 1/2m Ответ: 1/2m + 1/2m