-7x+22
-8a2+2ab-2b2
0.7x2-0.4x+y
54x2+2
-2x2+3x+4
-3x2+9x
-x-3
-18x3+542x2+116x
-2a-11b
11a+2b-8
6a+5b+7
-21x+15y
-7ab-212a+283
12x-10
-5x+3
6x-25y
3128a+8615b
-12a+b
11x3-13
11x6-5y6
11x6-136
23x6-76
14a2b2c4
s4t324
-192m5n5
-m6n72
-18ab4c3
-p9q5r496
20m17n11
-25x10y63
-4y3x
-3x22
-5x3y
-28a33b2
-43a3
2ab23c
b32ac2
-72qp
-q2r23
2pq3
-7m2n25