4x
-12x2-2x
-4.2a2+4.8a+1.1
-43y2+1715y-112
-x+5
10x-7y
-x-3
79xy-2512x-12y
7x-1
10x2-9x+5
6a+5b+7
-2x2-4xy+5y2
3x-2
58x2-52y2
33x-16
2x-23y+59
-12a-125b+72
4x-4y
7m3+83
-11x72+41y72-3172
11x6-136
x-2
14a2b2c4
20x3yz43
72x3
-m6n72
-250x4y2
-x7y8z948
20m17n11
-25x10y63
3a2
4ab
-5x3y
-3x16
3x8y2
3c320b4
-24y2x
c29a4b4
-b26a2
-xy2
-4b