How do you simplify the expression: square root sign 1200

This is not finding the square root this is simplifying the expression, solving.
Sorry I still don't have math symbols for square roots and stuff so I have to keep using words

sqrt(1200) = sqrt(400*3) since 1200=400*3

sqrt(400*3) = sqrt(400)*sqrt(3) = 20*sqrt(3)

√1200
√100 x 12
10√12
10√3 x 4
10 x 2 √3
20√3