5x² - 7x + 2 = 02x² - 5x + 3 = 0x² + 2x - 15 = 0x² - 4x - 12 = 02x² + x - 6 = 03x² - 11x + 6 = 04x² - 7x + 3 = 04x² - 8x + 3 = 0x² - 9x + 20 = 05x² + 8x - 4 = 07x² - 5x - 2 = 04x² - 17x + 15 = 0?
5x² - 7x + 2 = 0 2x² - 5x + 3 = 0 x² + 2x - 15 = 0 x² - 4x - 12 = 0 2x² + x - 6 = 0 3x² - 11x + 6 = 0 4x² - 7x + 3 = 0 4x² - 8x + 3 = 0 x² - 9x + 20 = 0 5x² + 8x - 4 = 0 7x² - 5x - 2 = 0 4x² - 17x + 15 = 0.