Răspuns :
Patratele perfecte formate din 2 cifre sunt:16,25,36,49,64,81
=>yx∈{16,25,36,49,64,81}<=>xy∈{61,52,63,94,46,18}
61,52,63,94,46,18.
Astea sunt.
Xy=61,52,63,94,46,18
Patratele perfecte adica yx sunt:
16,25,36,49,64,81
Astea sunt.
Xy=61,52,63,94,46,18
Patratele perfecte adica yx sunt:
16,25,36,49,64,81