Question:`a + b = 0` হলে `a^2 - b^2` এর মান কত? 

A - 2 
B 0 
C 2 
D 5 

+ Answer
B 

+ Explanation
`a^2 - b^2` 

 `= (a + b) (a - b) = `

 `= 0.(a - b) = 0`

+ Report

Irin Moni

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