Factorise the following polynomials:

$x^2+xy-x-y$

Factorise the following polynomials:

$y^2-yz-5y+5z$

Factorise the following polynomials:

$5xy+7y-5y^2-7x$

Factorise the following polynomials:

$5p^2-8pq-10p+16q$

Factorise the following polynomials:

$a^{2}b-a{b}^2+3a-3b$

Factorise the following polynomials:

$x^3-3x^2+x-3$

Factorise the following polynomials:

$6x{y}^2-3xy-10y+5$

Factorise the following polynomials:

$3ax-6ay-8by+4bx$

Factorise the following polynomial:

$x^2+xy(1+y)+y^3$