Question

simplify (5+underroot 7)(2+underoot5) and plzz explain me​

Answer 1

Step-by-step explanation:

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

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

$= 10 + 5 \sqrt{5} + 2 \sqrt{7} + \sqrt{35}$