Question

3^х =5^2x-3 =45 помогите

Answer 1

Ответ:

3 ^ x * 5 ^ (2x - 3) = 45

3 ^ x * 5 ^ (2x) * 5 ^ - 3 =45|*5^ 3

3 ^ x * 5 ^ (2x) = 45 * 5 ^ 3

3 ^ x * 25 ^ x = 45 * 125

(3 * 25) ^ x = 45 * 125

75 ^ x = 75 ^ 2

x = 2