Factorize: `(x^(2)+2x)^(2)-3(x^(2)+2x)-y(x^(2)+2x)+3y`

Factorize: x^(3)-2x^(2)y+3xy^(2)-6y^(3)

Factorize: (2x+3y)^(2)-5(2x+3y)-14

Factorize: 54x^(6)y+2x^(3)y^(4)

Factorize x^(2)y+2xy-3x-6

Factorize :(2x+3y)^(2)-5(2x+3y)-14

Factorize: 12 (2x-3y) ^ (2) -16 (3y-2x)

Factorize each of the following expressions: a^(3)x+a^(2)(x-y)-a(y+z)-z(x^(2)+3x)^(2)-5(x^(2)+3x)-y(x^(2)+3x)+5y