-2x
-12x2-2x
-148a+445b
310x+12
-2x-1
-3x2+9x
-178x-25y+1
218x-218y
-6x+9y
-5x+9y+4
13ab+2a+5b
32x+40
3x-2
58x2-52y2
x+1
2x-23y+59
6a-2b
-3a+47b
11x3-13
31x6+176
4a21-821
4
84x3y4z6
15a2b2c
-56x5y7
3a4b2c32
12x3y3
-p9q5r496
-p5q4r425
3x5y4
3a2
-6x2
-8p2q7r83
-4m3n
-10ab3
4y3x2z
3x47
-72qp
-q2r23
-5m4n28
-4b