Question

multiplique:
√7.(√7+√2)=​

Answer 1

Oie, Td Bom?!

$= \sqrt{7} \: . \: ( \sqrt{7} + \sqrt{2} )$

$= \sqrt{7} \: . \: \sqrt{7} + \sqrt{7} \: . \: \sqrt{2}$

$= 7 + \sqrt{7 \: . \: 2}$

$= 7 + \sqrt{14}$

Att. Makaveli1996