Вправи: 218

218. Знайдіть х:

1) 18²⁴ = (18^х)⁸; (18³)⁸ = (18^х)⁸; х = 3;

2) 99²⁴ = (99^х)⁶; (99⁴)⁶ = (99^х)⁶; х = 4;

3) 2,3²⁴ = (2,3²)^х; (2,3²)¹² = (2,3²)^х; х = 12;

4) 5,09²⁴ = (5,09^х)²⁴; (5,09¹)²⁴ = (5,09^х)²⁴; n = 1.