Question

(√5+√7)(√5-√11) simplify
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Answer 1

Answer:

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Answer 2

$( \sqrt{5} + \sqrt{7} )( \sqrt{5} - \sqrt{11} ) \\ = {( \sqrt{5} )}^{2} - ( \sqrt{7} - \sqrt{11} ) \sqrt{5} + \sqrt{11} \times \sqrt{7} \\ = 5 - \sqrt{5} ( \sqrt{7} - \sqrt{11} ) + \sqrt{77}$