(2x+1)- এর বর্গ কত ? 

A 2x2 + 2x + 1

B 2x2 + 4x + 1 

C 4x2 + 2x + 1 

D 4x2 + 4x + 1 

Solution

Correct Answer: Option D

(2x + 1)2

=> (2x)2+2.2x.1+1

=> 4x2 +4x + 1 

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