Factorize each of the following expressions: `a^2-b+a b-a` (ii) `x y-a b+b x-a y`

Factorize each of the following expressions : a^2-b^2-a-b

Factorize each of the following expressions: x^2+y-x y-x

Factorize each of the following expressions: a^(2)-b^(2)-a-b

Factorize each of the following expressions : 1-2a b-(a^2+b^2)

Factorize each of the following algebraic expressions: a^2-b^2-a-b

Factorize each of the following expressions: a x y+b c x y-a z-b c z

Factorize each of the following expressions: 16(a-b)^3-24(a-b)^2

Factorize each of the following expressions: (a) a^2-b^2-a-b (b) 25 x^2-10 x+1-36 y^2 (c) 1-2a b-(a^2+b^2)

Factorize each of the following expressions: x a^2+x b^2-y a^2-y b^2 (2) x^2+x y a+x z+y z (3) 2a x+b x+2a y+b y (4) a b-b y-a y+y^2

Factorize each of the following expressions: (i) 4a^2-9b^2-2a-3b (ii) x^2+2x y+y^2-a^2+2a b-b^2