In factorization, we write the middle term of the quadratic equation either as a sum of two numbers or difference of two numbers such that the equation can be factorized.

⇒ 12x² – 57x + 60 = 25x² + 300 – 175x

⇒ 13x² - 118x + 240 = 0

⇒ 13x² – 78x – 40x + 240 = 0

⇒ 13x(x – 6) – 40(x – 6) = 0

⇒ (13x – 40)(x – 6) = 0

⇒ x = 6, 40/13