(a+b)2 = ?
Created: 1 year ago |
Updated: 10 months ago
best des
(a+b)2 = a2+2ab+b2
= (a-b)2+2ab+2ab [ a2+b2 = (a-b)2+2ab হতে ]
= (a-b)2+4ab
Answer: (a-b)2+4ab
| (ক) | a2 – 2ab + b2 | = | (a – b)2 |
| (খ) | (a + b)(a – b) | = | a2 – b2 |
| (গ) | (a – b)2 + 4ab | = | (a + b)2 |
| (ঘ) | (a + b)2 − 4ab | = | (a – b)2 |
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