-23c
-a2+a
-1.3a
1712x-1112
-x+5
-15x3+6x2+11x
-x-3
103x+12
7x-1
11a+2b-8
13ab+2a+5b
30x2-35x
5x2-9x
332x-110y
-5x+3
2x-75
-47x-y
-x+109
7m3+83
-11x72+41y72-3172
-68a15+10615
x-2
48a2bc
-6m3n4
72x3
-m6n72
-72a3b4c5
2a5b2c3
-189a9b3c5
3x5y4
2a
-2y2z3x
-8p2q7r83
-8y23x2
12x
2ab23c
3x47
c29a4b4
-b26a2
-xy2
-7m2n25