2a-b
8y2-6y
7.3x2-2.5x+1.8
-56x+23y+12
x+4y-7
10x-7y
16x+16
218x-218y
7x-1
11a+2b-8
6a+5b+7
30x2-35x
-12a+8b-16
332x-110y
18x+38
6x-25y
73x-20y
-6x+23y
-22a5-35
31x6+176
11x6-136
x-2
14a2b2c4
3x2y
72x3
-5a2b4c4
-72a3b4c5
-p9q5r496
-p5q4r425
3a9b8c420
-23m3
2pq23r2
8a3b2
-28a33b2
3x8y2
2ab23c
m24n
3200b
2m2
-xy2
-4p3r3