-2x
-5x2+2x-7
7.3x2-2.5x+1.8
13a2-a
5x2+4x+3
-3x2+9x
76x+47y-2
136a2-98a+263
-2a-11b
11a+2b-8
-2x+6y+3
30x2-35x
-2x+2.5y
12x-10
-2a+8c
2x-75
-712a+4124b
-x-12y
3x4+54
-11x72+41y72-3172
27x4-214
2x3-2y3
-35x4y5
15a2b2c
72x3
2x5y4z3
24x4
-x7y8z948
32x6y7
3x7y8
3x
-6a2
-8p2q7r83
-3x16
3x8y2
4y3x2z
-24y2x
225c4a4b6
10x
-xy2
-4b