Yes you should find the equal squared elements one to one as you put it.
For example:
a1=[2,2,3]
a2=[4,9,4]
This would return true, as there are two "2" elements and one "3" in a1 array and when squared will be equal to a2 irrespective of their position.
a1[4,4,5]
a2[16,25,25]
This would return false.
Hopes this clears up your confusion.

Step by step guide:

1. Look at the arrays
2. Realize that 2**2 != 9
3. ???
4. Profit