2a-b
-5x2+2x-7
76x
310x+12
x+4y-7
-2a+3b
-x-3
-18x3+542x2+116x
-2a+14
-5x+9y+4
-2x+6y+3
-60x2+15x+120
-1.2a-3b+24c
12x-10
-54x-8
-59a+5b+30c
6a-2b
7x-1
3x4+54
a6-b6
11x6-136
11a12-b12
-16a4b3
s4t324
-192m5n5
2x5y4z3
-250x4y2
200x5
2a4b4c47
3x7y8
-23m3
-2y2z3x
-9q2pr6
-4m3n
9z2x2
12y3x3
-24y2x
81x42y
2a29b
-xy2
-4b