Решите неравенство251x−1−4⋅51x−1−5⩾0 25^{\frac{1}{x}-1} - 4 \cdot 5^{\frac{1}{x}-1} - 5 \geqslant 0 25x1−1−4⋅5x1−1−5⩾0▸Ответ(0;12]\left(0; \tfrac{1}{2}\right](0;21]