Question 1018296
(3 - x) (2 - x) = 6 -3x -2x + x^2 = 6 - 5x + x^2

(9ab – 6b)(14b + 3a) = 9*14 ab^2 + 9*3 a^2b - 6*14b^2 - 6*3 ab

= 3(42 ab^2 + 9a^2b - 28b^2 -6 ab)

You can simplify Ian's expression further
12x2y3 (x-2y)