Related Post: X X 3 )( X 6 )( X 9 )+ 56 X X 3 )( X 6 )( X 9 )+ 56 Solution Xii X X 3 )( X 6 )( X 9 )+ 56 Factorise X X 3 )( X 6 )( X 9 )+ 56 3 X What = 54