Question

5 в степени 2Х-1=125

Answer 1

5^2x-1=125
5^2x-1=5^3
2x-1=3
2x=4      /2
x=2

Answer 2

10х-5=125

Answer 3

10х=125+5

Answer 4

х=13

Answer 5

5^2х-1=5^3
2x-1=3
2x=4
x=2

(^)-степень