Trinomio notevole n°2

Prof. Mauro La Barbera

  
x² + 3x + 2 =
x² – x – 12 =
x² – 7x + 12 =
x² - x – 6 =
x² + 8x – 9 =
x² – x – 20 =
x² + 9x + 20 =
x² + x – 20 =
x² – 6x - 16 =
x² + 4x – 21 =
x² + 4x – 5 =
x² + x - 56 =
x² – 2x – 35 =
x² – 13x + 40 =
x² - 8x + 12 =