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प्रश्न
Evaluate: (4 − ab) (8 + ab)
बेरीज
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उत्तर
(4 − ab) (8 + ab) = 4 (8 + ab) − ab (8 + ab)
= 32 + 4ab − 8ab − a2b2
= 32 − 4ab − a2b2
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