sqrt(10x2)
sqrt (10x2 ) = x sqrt 10
or maybe sqrt (10 x 2 ) = sqrt 20 = sqrt (4*5) = 2 sqrt 5
\(\sqrt(10*2) \\ \\\sqrt(20) \\ \\\sqrt(4*5) \\ \\2\sqrt(5)\)
Solution:
\(2\sqrt(5)\)