125(√5)2x=1 হলে x এর মান কত?

A 3

B -3

C 7

D 9

Solution

Correct Answer: Option B

125(√5)2x=1
বা, (√5)2x=1 /125
বা, (5¹/²)2x=5⁻³
বা, 5x = 5⁻³ 
∴ x=-3

Practice More Questions on Our App!

Download our app for free and access thousands of MCQ questions with detailed solutions