x² + 13x + 42 = 0
                        ( -7 )

x² + 14x + 45 = 0
                        (    )

x² - 11x + 24 = 0
                        (    )

x² - 10x + 16 = 0
                        (    )

x² - 2x - 63 = 0
                        (    )

x² - 25 = 0
                        (    )

x² + 5x + 6 = 0
                        (    )

x² + 16x + 63 = 0
                        (    )

x² + x - 12 = 0
                        (    )

x² + 2x - 15 = 0
                        (    )

                      +[    ]

x² + 8x + 15 = 0
                        (    )

x² + 5x - 14 = 0
                        (    )

x² + x - 6 = 0
                        (    )

x² - 5x - 36 = 0
                        (    )

x² - 15x + 56 = 0
                        (    )

x² + 4x - 32 = 0
                        (    )

x² - 15x + 54 = 0
                        (    )

x² - 64 = 0
                        (    )

x² - 9 = 0
                        (    )

x² - 10x + 21 = 0
                        (    )

                      +[    ]

x² - 11x + 24 = 0
                        (    )

x² + 10x + 21 = 0
                        (    )

x² - 4x - 21 = 0
                        (    )

x² - 11x + 30 = 0
                        (    )

x² + 5x + 6 = 0
                        (    )

x² - 4x - 21 = 0
                        (    )

x² + 11x + 24 = 0
                        (    )

x² + 3x - 40 = 0
                        (    )

x² + 5x - 24 = 0
                        (    )

x² - 2x - 63 = 0
                        (    )

                      +[    ]
                 +++[[       ]]