3 Answers
(a + b)2 মানে (a+b) (a+b)
(a + b) (a + b)
= a(a + b) + b(a + b)
= a2 + ab + ab + b2
= a2 + 2ab + b2
(a + b) (a + b)
= a(a + b) + b(a + b)
= a2 + ab + ab + b2
= a2 + 2ab + b2
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