125 (5)2x = 1 হলে x এর মান কত?
A
3
B
-3
C
7
D
9
Correct Answer: -3
125(5) 2x = 1 = >53(5)2x = 1 = >53.52x.12 = 1 = >53 + x = 5° = >3 + x = 0 .'. x = - 3