4 divided by square root of 2
Notice that 2 * 2 = 4
And 2 = √2 * √2
So 4 / √2 =
[ √2 * √ 2 * √ 2 * √2] / √2 =
[ √2 * √ 2 * √ 2 ] =
[2 * √2 ]
