已知x,y为正整数,且x²-y²=5,求x,y的值

x��P�J�@�A���2u�`n�#��$�&�Җ .�X+�HIw�����迄�Į�'�H���gν��s�t->{��b�,y�#��)ʒKok�h��c�*P$�O�\>lsi���]����j�N�^W�^��A~3�^�>�����_E8糂)����E��i�^�0��4P��Ɔ8�Elk�4�G6v�H�u�+!?�/�l04' "T�OƼ�%�q%��W� ��.R��_ ��H��)�R���1���Ȫ��,Uh�t�\�Vgi�B�A�A��L�EԎ��