x² - 13x + 42 = 0
                        ( 6 )

x² + 14x + 48 = 0
                        (    )

x² - 3x - 40 = 0
                        (    )

x² + x - 72 = 0
                        (    )

x² - 3x - 10 = 0
                        (    )

x² - 4x - 32 = 0
                        (    )

x² + 17x + 72 = 0
                        (    )

x² + 9x + 18 = 0
                        (    )

x² + 17x + 72 = 0
                        (    )

x² + 5x - 36 = 0
                        (    )

                      +[    ]

x² - 4x - 32 = 0
                        (    )

x² - 49 = 0
                        (    )

x² + 11x + 28 = 0
                        (    )

x² - 8x + 12 = 0
                        (    )

x² - 16 = 0
                        (    )

x² + 8x + 15 = 0
                        (    )

x² + 5x - 36 = 0
                        (    )

x² + 7x - 18 = 0
                        (    )

x² - 12x + 27 = 0
                        (    )

x² - 17x + 72 = 0
                        (    )

                      +[    ]

x² + 2x - 48 = 0
                        (    )

x² + 11x + 30 = 0
                        (    )

x² + 6x - 16 = 0
                        (    )

x² - 2x - 8 = 0
                        (    )

x² + 10x + 24 = 0
                        (    )

x² - 2x - 24 = 0
                        (    )

x² - 11x + 28 = 0
                        (    )

x² - 4x - 21 = 0
                        (    )

x² - 2x - 48 = 0
                        (    )

x² + 14x + 45 = 0
                        (    )

                      +[    ]
                 +++[[       ]]