a+1/a=3 হলে ,a² +1/a² =?

A 27

B 7

C 9

D 4

Solution

Correct Answer: Option B

দেওয়া আছে ,
          a+1/a=3
প্রদত্ত রাশি =a² +1/a²
                =(a+ 1/a)² -2.a.1/a
                =(3)² -2
                =9-2
                =7

Solution

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