Question

root2+root2=2root2
is right?​

Answer 1

Answer:

no

root2+root2=4root4

Answer 2

Yes, it is right.

$\sqrt{2} + \sqrt{2} = 2\sqrt{2}$

Also,

$\sqrt{2}+\sqrt{2} \neq \sqrt{4}$

and

$\sqrt{2} \times \sqrt{2} = 2 \quad Or \quad (\sqrt{2})^2 = 2$