A. Factorise completely:

(a) 18x^2 – 24xy + 8y^2

the answer i get is 2(3x+y)^2

but the answer given is 2(3x +2y)^2

B.Factorise the following:

(a) (x – 4)(x + 1) + 4a – ax

the answer i get is (x-4)(x+1-a)

but the answer given is (x-4)(x-1-a)