there is no square root button on my computer so i won't be adding one, sorry.
all of the options leave the 3 in its spot so you dont have to worry about that. To get the square root of 56 you just break 56 down until it is left with prim numbers:
56 / 2 =28
Now inside the square root: 2*28
28 / 4=7
Now inside the square root: 2*7*4
4 / 2=2
Now inside the square root: 2*7*2*2
you have two 2's so that comes out of th square root but the a 2 and 7 stays inside, you have to multiply the 2 and 7, giving you a 14.
2 3^ square root 14