(3x+2y)² + 2(3x+2y) (3x-2y) + (3x-2y)² এর সরল ফল কত?
Solution
Correct Answer: Option C
(3x + 2y)² + 2(3x + 2y) (3x - 2y) + (3x - 2y)²
= a² + 2ab + b²
[3x + 2y = a, 3x - 2y = b ধরে]
= (a + b)²
= (3x + 2y + 3x - 2y)²
= (6x)²
= 36x²
= a² + 2ab + b²
[3x + 2y = a, 3x - 2y = b ধরে]
= (a + b)²
= (3x + 2y + 3x - 2y)²
= (6x)²
= 36x²
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