Column A
2x^3 + 2x
2x(x^2 + 1)
x^2-x
x(x-1)
2xy-2x
2x(y-1)
9x+12x^2
3x(3+4x)
3x^7-15x
3x(x^6-5)
25x^6 - 36x^2
(5x^3 - 6x)(5x^3 + 6x)
25-x^2
(5-x)(5+x)
x^2 - 9y^4
(x-3y^2)(x+3y^2)
4-49x^2
(2-7x)(2+7x)
36-x^6
(6-x^3)(6+x^3)
x2-x-12
(x-4)(x+3)
x2+6x+8
(x+2)(x+4)
x2-21x+112
(x-8)(x-14)
x2+x-30
(x+6)(x-5)
x2-30x+221
(x-13)(x-17)
8-98x^6
2(2-7x^3)(2+7x^3)
x4+5x2-36
(x2+9)(x-2)(x+2)
18x^2-2
2(3x-1)(3x+1)
8x^3-200x
8x(x-5)(x+5)
5x2+10x+5
5(x+1)2
or
5(x+1)(x+1)
4x4-28x2-576
4(x2+9)(x-4)(x+4)
16x^4-81
(2x-3)(2x+3)(4x^2+9)
10x^4-160
10(x-2)(x+2)(x^2+4)
x8-256
(x4+16)(x2+4)(x+2)(x-2)
x4-11x2-900
(x2+25)(x-6)(x+6)