x + 20/x – 12 = 0

(vi) x + ²⁰/_x – 12 = 0

Sol. x + ²⁰/_x – 12 = 0

Multiplying throughout by x, we get,

x² + 20 – 12x = 0

∴  x² – 12x + 20 = 0

∴  x² – 10x – 2x + 20 = 0

∴  x(x – 10) – 2(x – 10) = 0

∴  (x – 10) (x – 2) = 0

∴  x – 10 = 0 or x – 2 = 0

∴  x = 10 or x = 2