2x-16
-12x2-2x
43x-178y
2a-835
6x-2y+9
3y2-20y
-2x+2
-3a-14b
-2a+14
3a-3c
-2x+6y+3
32x+40
-0.9a2-4.5a+3.6b
52x2+34y-43
31x-2
3a-15
-476x-298
4x-5y
-22a5-35
-11x72+41y72-3172
11x6-136
4
-16a4b3
4abc25
96x2y2z2
-x4y442
112m5n3
2a5b2c3
20m17n11
a9b11c784
3x
-3x22
-2x2
-28a33b2
-10ab3
2ab23c
-24y2x
225c4a4b6
-13b
-5p3q22
6x2y2