x-4y+2
2y+2
0.1x-1.2
-45a2-2a
7x-8
13x2-2x+2
16x+215
79xy-2512x-12y
7x-1
3a-3c
13ab+2a+5b
10ab-15a+45b
-2x+2.5y
-16x+15
22x
2x-75
1712a+49b
-12a+b
3a4+12
31x6+176
9x35+71y35
23x6-76
84x3y4z6
s4t324
72p4q3r5
3a4b2c32
-72a3b4c5
-96x5y3
-189a9b3c5
3x5y4
-23m3
-3x22
-5x3y
-8y23x2
3x8y2
8n4m
b32ac2
-96m2n5
-8x2y3z
-y2z
6x2y2