Question

5root 7×2root 7 =???????plz help me

Answer 1

$5 \sqrt{7} \: \times \: 2 \sqrt{7} = 5 \times 2 \times \sqrt{7 \times 7}$

$= 5 \times 2 \times 7$

$= 70$

Answer 2

=5√7*2√7

=10*7

=70

if there is something wrong then kindly rectify it