If a $^{2}$ +b $^{2}$ = 284 and ab = 58, find the value of (a+b).

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400

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-400

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-10

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Solution

The correct option is A
20

a $^{2}$ +b $^{2}$ = 284

$⟹$ a $^{2}$ +b $^{2}$ +2ab = 284 + 2 $\times$ 58

$⟹$ a+b = $\sqrt$ 400 = 20

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