x-4y+2
-12x2-2x
-148a+445b
-53x2+13x
x+4y-7
10x-7y
76x+47y-2
136a2-98a+263
-2a-11b
10x2-9x+5
-2x+6y+3
-60x2+15x+120
-2x+2.5y
103a-52b+1415c
-54x-8
-2x+63y+1
-2a-b
12a+13b
11x3-13
a6-b6
27x4-214
x-2
84x3y4z6
-6m3n4
96x2y2z2
-m6n72
24x4
-p9q5r496
-p5q4r425
3a9b8c420
-23m3
-6x2
8a3b2
-4m3n
95m4
6ab
-125a
81x42y
2a29b
-xy2
-7m2n25