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प्रश्न
Using suitable identity, evaluate (97)3
उत्तर
(97)3 = (100 - 3)3
= (100)3 - (3)3 - 3 × 100 × 3(100 - 3)
= 1000000 - 27 - 900 × 97
= 1000000 - 27 - 87300
= 912673
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