-6y
-6c2-c
2.8a-1.4b
-124a2-12
-x+5
-28a2+22a
-x-3
10x2+78x+13
-6x+9y
-x2+12x-2
13a-5b-7c
32x+40
-7ab-212a+283
-8x-9y
33x-16
-10x2-38
-112x+512y
13x+107
-22a5-35
41a24+524
27x4-214
18a5-5b
84x3y4z6
s4t324
-168a5b3
3a4b2c32
12x3y3
-x7y8z948
-189a9b3c5
-9m5n47
2m23n3
2pq23r2
-5x3y
-8y23x2
95m4
12y3x3
m24n
225c4a4b6
-13b
-4x3
-7m2n25