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Question
विस्तार करा.
(5a + 6b)2
Sum
Solution
(a + b)2 = a2 + 2ab + b2 आणि (a − b)2 = a2 − 2ab + b2.
(5a + 6b)2
= (5a)2 + 2 × (5a) (6b) + (6b)2
= 25a2 + 60ab + 36b2
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