x2+7x+10
4x2+12x+9
8x3-1
4x2+9
x2+xy-2x-2y
4x2+16x+15
(x-2)(x+y)
(2x+5)(2x+3)
(2x-1)(4x2+2x+1)
(2x-3)(2x+3)
(x+5)(x+2)
(2x+3)2
