Question: 
2(a2 + b2) = কত?
(a + b)2 + (a - b)2
(a + b)2 - 2ab
(a + b)2 + (a - b)2
(a + b)2 - 4ab
(a - b)2 + 2ab
Answer: 
(a + b)2 + (a - b)2
Last Updated: 
08/11/2021 - 03:30