-6y
11c2-17
43x-178y
-53x2+13x
4x+6
-xy-11x+9y
136x-114
79xy-2512x-12y
-2a-11b
11a+2b-8
2ab+15a-17b
-3a+2b
-1.2a-3b+24c
18a+115b-27
-54x-8
-9x+31y
10x-233y
x+23y
3a4+12
31x6+176
27x4-214
18a5-5b
84x3y4z6
20x3yz43
72x3
3a4b2c32
-72a3b4c5
-27m7n4
20m17n11
a9b11c784
3a2
4ab
8a3b2
-3x16
95m4
8n4m
b32ac2
c29a4b4
-8x2y3z
2pq3
-4p3r3