Question

(7/2)^x-8-x^2<4/49 ^ в cтепени...

Answer 1

4/49 = (7/2)^-2
(7/2)^(x - 8 - x²) = (7/2)^-2
x - 8 - x² = -2
x² -x +6 = 0
По т. Виета х1 = 3  и  х2 = -2