Question

Find the positive root of: 7 + 2V10

Answer 1

Answer:

see the pic they is your answer .

answer is √ 5 + √ 2 .

Answer 2

Answer:

$7 + 2 \sqrt{10} \\ 2 + 5 + 2 \times \sqrt{2 \times 5} \\ \\ = ( \sqrt{2} + \sqrt{5} ) ^{2} \\ ( \sqrt{2} + \sqrt{5} )( \sqrt{2} + \sqrt{5} )$

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