Question:${\displaystyle x-\frac{1}{x}=a}$ হলে ${\displaystyle x^2+\frac{1}{x^2}}$ এর মান কোনটি? 

A a + 2 
B a - 2 
C ${\displaystyle a^2+2}$ 
D ${\displaystyle a^2-2}$ 

+ Answer
C 

+ Report

Irin Moni

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