-2x+3y-2
3xy+4x-3y
2.8a-1.4b
-43y2+1715y-112
2ab+7a-10b
-xy-11x+9y
76x+47y-2
-3a-14b
7x-1
11a+16b-4c
13ab+2a+5b
32x+40
5x2-9x
12x-10
-2x+27
8a-2b-10c
-2a-b
7x-1
3a4+12
-11x72+41y72-3172
27x4-214
x-2
84x3y4z6
4abc25
72p4q3r5
-m6n72
-18ab4c3
2a5b2c3
32x6y7
3a9b8c420
2a
-6x2
-2x2
9a2
12x
6ab
-24y2x
3200b
-13b
m6n24
3a4bc