Images 2 9 4 Б

< Previous photo
Photo - 72
Next photo >
2 9 4 б. А+2аб+б. А2+2аб+б2. Б 2 3. -3(А+Б)+2(А-Б), 2у2.
А+2аб+б. А2+2аб+б2. Б 2 3. -3(А+Б)+2(А-Б), 2у2.

See also