x² - 49 = 0
                        ( -7 )

x² + 4x - 32 = 0
                        (    )

x² + 4x - 45 = 0
                        (    )

x² - 5x + 6 = 0
                        (    )

x² + 3x - 18 = 0
                        (    )

x² + 11x + 30 = 0
                        (    )

x² + 2x - 24 = 0
                        (    )

x² - 13x + 36 = 0
                        (    )

x² + 2x - 48 = 0
                        (    )

x² + 10x + 24 = 0
                        (    )

                      +[    ]

x² + 8x + 12 = 0
                        (    )

x² + x - 6 = 0
                        (    )

x² - 81 = 0
                        (    )

x² - 4x - 12 = 0
                        (    )

x² - 81 = 0
                        (    )

x² - 5x - 36 = 0
                        (    )

x² - 5x - 14 = 0
                        (    )

x² + 8x + 12 = 0
                        (    )

x² + x - 56 = 0
                        (    )

x² + 11x + 28 = 0
                        (    )

                      +[    ]

x² - 36 = 0
                        (    )

x² - x - 20 = 0
                        (    )

x² + 16x + 64 = 0
                        (    )

x² - 2x - 8 = 0
                        (    )

x² + 2x - 63 = 0
                        (    )

x² + 2x - 15 = 0
                        (    )

x² - 2x - 15 = 0
                        (    )

x² + 13x + 40 = 0
                        (    )

x² + x - 56 = 0
                        (    )

x² - 64 = 0
                        (    )

                      +[    ]
                 +++[[       ]]