7x-6y
-3xy-4x-2
43x-178y
53x2-2320x+19
6x-2y+9
-28a2+22a
-178x-25y+1
29x2+32x
-6x+9y
11a+2b-8
13ab+2a+5b
32x+40
5x2-9x
-10a-27b+60
13
-3x-16y-39
6a-2b
-3a+47b
-22a5-35
a6-b6
4a21-821
4
14a2b2c4
3x2y
-192m5n5
a5b6c4
-250x4y2
-p9q5r496
36x3y6
3x5y4
3a2
4ab
9ab
-4m3n
95m4
8n4m
-24y2x
-96m2n5
-a2b64c3
-xy2
3a4bc