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Evaluate {(83)^2 - (17)^2}.

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Evaluate {(83)2 - (17)2}.

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Best answer

Using the identity: a2 – b2 = (a + b)(a-b) 

{(83)2 - (17)2} = (83 - 17)(83 + 17) 

= 66 × 100= 6600

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