Based on the conditions, all solutions that are tested - are wrong.

For example input:
a = [2147483647]
b = [1]
2147483647 * 2147483647 == 1 // of the overflow type in java
and all decisions will be shown true, but 2147483647 is not a root of 1.

Or this entry:
a = [-2]
b = [4]
-2 * -2 == 4
solutions show true, but -2 it is not the root of 4.

I'm about two hours could not understand what went wrong in the eighth test, because of this.
I looked at other solutions, they first, each element of the array "a" squared, and then arrays are sorted and compared, but it is wrong.
a = [2147483647, 7, 4] -> [1, 49, 16] -> [1, 16, 49]
b = [49, 1, 16] -> [1, 16, 49]
and the result is true, though to be false.