2x-16
9a2-4b2+5
1.5a-0.9
2a-835
-2x-1
-3x2+9x
-16x2-16x+56
79xy-2512x-12y
-6x+9y
3a-3c
13a-5b-7c
35a-28b+112
-4a+28b+0.8
-8x-9y
-2x+27
a+6
1712a+49b
-3a+47b
3x4+54
31x6+176
4a21-821
11a12-b12
-16a4b3
4abc25
-56x5y7
-5a2b4c4
-18ab4c3
-p9q5r496
-189a9b3c5
3x7y8
3a2
4ab
-9q2pr6
9q8r2p
9z2x2
4y3x2z
-24y2x
225c4a4b6
-94x
xy4
6x2y2