15a
-a2-8a+1
0.1x-1.2
-45a2-2a
-15x-9
13x2-2x+2
136x-114
79xy-2512x-12y
-2a-11b
11a+2b-8
5a+5b-c
30x2-35x
-2x+2.5y
18a+115b-27
18x+38
-36x+9
-9x+11
-198x+94
7m3+83
11x6-5y6
11a20+47b20
4
-35x4y5
4abc25
-192m5n5
-x4y442
12x3y3
-x7y8z948
20m17n11
3a9b8c420
2m23n3
2pq23r2
-8p2q7r83
-8y23x2
12x
12y3x3
b32ac2
3200b
-q2r23
-5p3q22
-4p3r3