x2 – x – 132 = 0

(x) x² – x – 132 = 0

Sol. x² – x – 132 = 0

∴  x² – 12x + 11x – 132 = 0

∴ x (x – 12) + 11 (x – 12) = 0

∴ (x – 12) (x + 11) = 0

∴ x – 12 = 0 or x + 11 = 0

∴ x = 12 or x = –11