Question

calculati √10·40 pe lung
URGENT VA ROG!

Answer 1

$\sqrt{10 *40} = \sqrt{400} = 20$

Answer 2

$\sqrt{10\cdot 40} = \sqrt{10\cdot 10\cdot 4} = \sqrt{10^2\cdot 4} = \sqrt{10^2}\cdot \sqrt{4} = 10\cdot 2 = 20$