15a
-3xy-4x-2
-x+0.8y+3.6
76x2+x-56
-2x-1
13x2-2x+2
136x-114
-18x3+542x2+116x
-2a+14
10x2-9x+5
2ab+15a-17b
12x+18y-30
-12a+8b-16
332x-110y
x+1
a-1
132x-163
-6x+23y
7m3+83
-6x35-3835
11a20+47b20
x-2
-16a4b3
-6m3n4
72p4q3r5
2x5y4z3
-18ab4c3
200x5
20m17n11
3x5y4
3a2
2pq23r2
9ab
9a2
9z2x2
3c320b4
3x47
-96m2n5
-q2r23
2pq3
2xy2z