TISSNET 2023

Question 52

What is the value of $$3^5+\dfrac{1}{3^5}$$?

Solution

The value of  $$3^5+\dfrac{1}{3^5}$$

=>  $$\dfrac{3^5}{1}+\dfrac{1}{3^5}$$

LCM is $$3^5$$ 

=> $$\dfrac{\left(3^5\right)^2+1}{3^5}$$

=> $$\ \dfrac{3^{10}+1}{3^5}$$ 

The answer is option B.


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