Задача №2214

Решите неравенство: $\frac{28}{(2^{7-x^2}-4{)}^2}+\frac{1}{2^{7-x^2}-4}-2\ge 0$$\frac{28}{(2^{7-x^2}-4{)}^2}+\frac{1}{2^{7-x^2}-4}-2\ge 0$$$\frac{28}{(2^{7-x^2}-4{)}^2}+\frac{1}{2^{7-x^2}-4}-2\ge 0$$