Question

show that the sum and product of two rational numbers (5+√2) & (5-√2) are rational numbers.

Answer 1

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Answer 2

Your answer !!

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$Sum \: of \: the \: given \: numbers \\ \\ 5 + (\sqrt{2}) + 5 - \sqrt{2} \\ \\ 10 \\ \\ \\Product \: of \:the \:given \:numbers \\ \\ (5 + \sqrt{2}) ( 5 - \sqrt{2} )\\ \\ Using \: identity \\ \\ 25 - 2 \\ \\ 23$

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