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प्रश्न
Using suitable identities, evaluate the following.
(339)2 – (161)2
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उत्तर
We have,
(339)2 – (161)2 = (339 + 161)(339 – 161) ...[Using the identity, a2 – b2 = (a + b)(a – b)]
= 500 × 178
= 89000
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