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Question
Using suitable identities, evaluate the following.
(339)2 – (161)2
Evaluate
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Solution
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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Chapter 7: Algebraic Expression, Identities and Factorisation - Exercise [Page 233]
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