Question

Simplity
(√5-√2) (√5+√2)​

Answer 1

your answer is 3

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Answer 2

Answer:

$( \sqrt{5} - \sqrt{2} )( \sqrt{5} + \sqrt{2} ) \\ = ( \sqrt{5} \times \sqrt{5} )( \sqrt{5} \times \sqrt{2} ) - ( \sqrt{2} \times \sqrt{5} ) ( \sqrt{2} \times \sqrt{5} ) \\ = ( \sqrt{25} )( \sqrt{10} ) - ( \sqrt{10} )( \sqrt{4} ) \\ = 5 \sqrt{10 } - 2 \sqrt{10}$

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