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Evaluate these using identity :8.5 × 9.5 |
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Answer» 8.5 × 9.5 = (9 – 0.5) (9 + 0.5) Here a = 9, b = 0.5 (9 – 0.5)(9 + 0.5) = (92) – (0.5)2 = 81 – 0.25 = 80.75 |
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