The factorisation of 6xy – 4y + 6 – 9x is

(3x – 2)(2y – 3) (3x + 2)(2y – 3) (3x – 2)(2y + 3) (3x + 2)(2y + 3).

(3x – 2)(2y – 3)

6xy – 4y + 6 – 9x = 2y(3x - 2 ) - 3 ( 3x - 2 ) = ( 3x - 2 ). (2y - 3 )