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Evaluate:(565+435)^2-4×565×435

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Evaluate:

(565+435)2- 4 × 565 × 435

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(565 + 435)2 - 4 x 565 x 435

= (565 - 435)2 (\(\because\) (a + b)2 - 4ac = (a - b)2))

= (130)2

 = 16900

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