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प्रश्न
Using a2 − b2 = (a + b) (a − b), find (1.02)2 − (0.98)2
उत्तर
(1.02)2 − (0.98)2 = (1.02 + 0.98) (1.02 − 0.98)
= (2) (0.04) = 0.08
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