যদি 125^(2x+3) = 5^(3x+6) হয়, তবে = কত?
Correct Answer: Option C
125^(2x+3) = 5^(3x+6)
=> 5^3(2x+3) = 5^3x+6
3(2x+3) = 3x + 6
বা, 6x + 9 = 3x + 6
বা, 6x - 3x = 6 - 9
বা, 3x = -3
x = -1
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