2ax^2-3x+2ax-3=(x+ 1)(2ax-3)

x(y+2)-x-y- 1 =(x- 1)(y+ 1)

(x^2-3x)+(x-3)^2=(x-3)(2x-3)

9x^2-66x+ 12 1=(3x- 1 1)^2

8-2x^2=2(2-x)(2+x)

x^4- 1=(x- 1)(x+ 1)(x^2+ 1)

x^2+4x-xy-2y+4=(x+2)(x-y+2)

4x^2- 12x+5=(2x- 1)(2x-5)

2 1x^2-3 1x-22=(2 1x+ 1 1)(x-2)

4x^2+4xy+y2-4x-2y-3=(2x+y-3)(2x+y+ 1)

9x^5-35x^3-4x=x(9x^2+ 1)(x+2)(x-2)