7x-6y
8y2-6y
-52a
1712x-1112
-2x-1
7x-7
-16x2-16x+56
-18x3+542x2+116x
-2a-11b
10x2-9x+5
13ab+2a+5b
12x+18y-30
-2x+2.5y
103a-52b+1415c
18x+38
2x-75
-712a+4124b
-6716a+49b
x2+11y2
-6x35-3835
4a21-821
11a12-b12
48a2bc
4abc25
72p4q3r5
2x5y4z3
-72a3b4c5
-96x5y3
36x3y6
a9b11c784
2a
-6x2
8a3b2
-8y23x2
-10ab3
4y3x2z
-125a
c29a4b4
-a2b64c3
-y2z
3a4bc