-12c+7
-17a2-2ab+14b2
76x
-56x+23y+12
2ab+7a-10b
-28a2+22a
920ab-310a-b
1120x2-176xy-112
-6x+9y
11a+16b-4c
5a+5b-c
-3a+2b
5x2-9x
165ab-3a+3518b
-33x-1
6x-25y
11x
32a+13b
x2+11y2
11x6-5y6
11x6-136
18a5-5b
-35x4y5
4abc25
72p4q3r5
a5b6c4
-250x4y2
-x7y8z948
-189a9b3c5
-25x10y63
-23m3
-3x22
-5x3y
9q8r2p
3x8y2
2ab23c
-125a
3200b
x2
103a2
-4b