x এর মান কত হলে (3/5)3 × (3/5)- 6 = (3/5)2x - 1 হবে?
Solution
Correct Answer: Option B
(3/5)3 × (3/5)- 6 = (3/5)2x - 1
⇒ (3/5)3 - 6 = (3/5)2x - 1
⇒ (3/5)- 3 = (3/5)2x - 1
⇒ - 3 = 2x - 1
⇒ 2x - 1 = - 3
⇒ 2x = - 3 + 1
⇒ 2x = - 2
⇒ x = - 1
⇒ (3/5)3 - 6 = (3/5)2x - 1
⇒ (3/5)- 3 = (3/5)2x - 1
⇒ - 3 = 2x - 1
⇒ 2x - 1 = - 3
⇒ 2x = - 3 + 1
⇒ 2x = - 2
⇒ x = - 1
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