-6y
-3xy-4x-2
-x+0.8y+3.6
2a-835
7x-8
13x2-2x+2
920ab-310a-b
-1320a2+1715a
-6x+9y
-x2+12x-2
6a+5b+7
-60x2+15x+120
3x-2
-10a-27b+60
x+1
-59a+5b+30c
-2a-b
x+23y
3a4+12
11x6-5y6
27x4-214
2x3-2y3
48a2bc
s4t324
-168a5b3
-m6n72
-250x4y2
2a5b2c3
32x6y7
3x5y4
3x
-6x2
-8p2q7r83
-4m3n
-10ab3
6ab
-649p3q2
81x42y
-a2b64c3
-y2z
6x2y2