-3a+11
-3xy-4x-2
0.1x-1.2
-56x+23y+12
4x+6
3y2-20y
2x+12y+9
-120y2-112y
7x-1
11a+16b-4c
13a-5b-7c
48a-36b
-0.9a2-4.5a+3.6b
2x-3
-2x+27
32a+23b
2a-3b
-x-12y
11x3-13
-11x72+41y72-3172
11x6-136
4
48a2bc
20x3yz43
72x3
a5b6c4
-250x4y2
-27m7n4
2a4b4c47
3x5y4
2a
2pq23r2
8a3b2
-28a33b2
95m4
8n4m
-649p3q2
81x42y
x2
103a2
6x2y2