Trinomio notevole n°3

Prof. Mauro La Barbera

  
x² – 8x – 20 =
x² + 12x + 20 =
x² + 7x – 30 =
x² – 7x – 30 =
x² + 12x – 13 =
x² – 14x + 13 =
x² – 12x + 11 =
x² + x – 30 =
x² + 12x + 11 =
x² + 11x + 30 =
x² + 2x – 15 =
x² – 13x + 22 =
x² – 8x + 15 =
x² + 7x + 10 =
x² – 3x – 10 =