Comments

• x³ - 7x² + 7x + 15 x ( x² - 7x + 7) + 15 Maybe the binomial way: x ( x² - 7x + 12,25 - 12,25 + 7 ) +15 x [ (x - 3,5)² - 5,25] + 15

  in How do you factor x^3-7x^2+7x+15? Comment by louis-baker_60a9a469da92d May 2021