x-4y+2
9a2-4b2+5
-4.2a2+4.8a+1.1
310x+12
2ab+7a-10b
-15x3+6x2+11x
920ab-310a-b
-7144ab+221a+3b
-2a+14
-5x+9y+4
6a+5b+7
-2x2-4xy+5y2
-7ab-212a+283
18a+115b-27
-2x+27
31a-b+53c
1712a+49b
-3415a-313b
11x3-13
41a24+524
11x6-136
18a5-5b
48a2bc
20x3yz43
72p4q3r5
3a4b2c32
-250x4y2
-x7y8z948
20m17n11
3x7y8
3x
-6x2
8a3b2
9q8r2p
-43a3
2ab23c
m24n
225c4a4b6
-a2b64c3
-xy2
2xy2z