Question

simplify (√13+√11) (√11-√13)​

Answer 1

Answer:

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Answer 2

Answer:

$( \sqrt{13} + \sqrt{11} )( \sqrt{11} - \sqrt{13} )$

$using \: this \: identity(a + b)(a - b) = (a {}^{2} - b {}^{2} )$

$( (\sqrt{13} ) {}^{2} - ( \sqrt{11}) {}^{2} )$

$(13 - 11)$

$= 2$

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