Use identities to evaluate (97)2.
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Given,
⇒ (97)2
⇒ (100 - 3)2
⇒ (100)2 + (3)2 - 2 × 100 × 3
⇒ 10000 + 9 - 600
⇒ 9409.
Hence, (97)2 = 9409.
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