Question:(a + b)(a - b) এর মান নিচের কোনটি ? 

A 21 
B 12 
C 3 
D 24 

+ Answer
A 

+ Explanation
(a + b)(a - b) = (2 + 5)(5 - 2) = `7 xx 3` = 21

+ Report

Irin Moni

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