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

Factorize each of the following expressions : 4a^2-9b^2-2a-3b

Factorize each of the following expressions: 4a^(2)-9b^(2)-2a-3b

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 : 3-12(a-b)^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

Factorize each of the following expressions: x^(2)+4x-21

Factorize each of the following expressions: x^(2)-7x+12

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

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

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