7x-6y
11c2-17
1.5a-0.9
-124a2-12
2ab+7a-10b
-xy-11x+9y
2x+12y+9
10x2+78x+13
7x-1
3a-3c
-2x+6y+3
30x2-35x
-1.2a-3b+24c
332x-110y
33x-16
-4a-81b
11x
4x-4y
3x4+54
a6-b6
11a20+47b20
4
14a2b2c4
-6m3n4
96x2y2z2
2x5y4z3
-250x4y2
-27m7n4
-189a9b3c5
3a9b8c420
2a
4ab
-2x2
-3x16
-43a3
12y3x3
-125a
225c4a4b6
x2
a2bc25
3a4bc