Question:নিচের কোনটি অনুসিদ্ধান্ত ? 

A `(a + b)^2 = (a - b)^2 + 4ab` 
B `(a + b)^2 = a^2 + 2ab + b^2` 
C `(a + b)^2 = a^2 - 2ab + b^2` 
D `(x + a) (x + b) = x^2 + (a + b) x + ab` 

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A 

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Irin Moni

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