Ptr27 Ptr27 26-11-2020 Matematică a fost răspuns Observati regula si scrieti sirurile : x11-11 x11-121 x11-_ x11-_ x11-_ x12-12 x12-144 x12-_ x12-_ x12-_ x13-13 x13-169 x13-_ x13-_ x13-_