Question

The value of under root 20 into under root 5 is

Answer 1

Answer:

10 is the correct answer.

Answer 2

$=\sqrt{20} *\sqrt{5} \\=\sqrt{4*5} *\sqrt{5} \\=\sqrt{(2*2)*5} *\sqrt{5} \\=2\sqrt{5} *\sqrt{5} \\=2*\sqrt{5} *\sqrt{5} \\=2*5\\=10$