Question

Simplify (5+V7) (2+V7) step by step pls

Answer 1

Answer:

$(5 + \sqrt{7} )(2 + \sqrt{7} )$

$5 \times 2 + 5 \times \sqrt{7} + \sqrt{7} \times 2 + \sqrt{7} \times \sqrt{7}$

$10 + 5 \sqrt{7} + 2 \sqrt{7} + 7$

$17 + 7 \sqrt{7}$

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