15a
-12x2-2x
76x
118x2+34x
4x+6
-2a+3b
76x+47y-2
218x-218y
-2a-11b
11a+16b-4c
-2x+6y+3
-60x2+15x+120
3x-2
165ab-3a+3518b
40x+3
-3x-16y-39
-2a-b
4x-5y
7m3+83
31x6+176
11a20+47b20
2x3-2y3
14a2b2c4
4abc25
72x3
2x5y4z3
112m5n3
-p9q5r496
2a4b4c47
a9b11c784
-23m3
4ab
-5x3y
9q8r2p
9z2x2
4y3x2z
-24y2x
-72qp
-q2r23
-c2ab
3a4bc