(X-1)(X-1)
(X2 -1)
(X2-2X +1)
(X+1)(X+1)
(X2 +2XY+Y2)
(X+3)(X-8)
(X-1)(X+1)
(X2 -5X-24)
(X-3)(X+8)
(X+Y)(X+Y)
(X2+2X+1)
(X2+5X-24)
