15a
11c2-17
-148a+445b
-18y2-56y
-10x-2y+2
-28a2+22a
16x+16
218x-218y
-2a+14
-5x+9y+4
2ab+15a-17b
30x2-35x
3x-2
12x-10
-54x-8
4a-11b+31
-712a+4124b
4x-5y
11x3-13
-11x72+41y72-3172
27x4-214
4
48a2bc
s4t324
-192m5n5
3a4b2c32
-72a3b4c5
200x5
20m17n11
a9b11c784
3x
-2y2z3x
-2x2
-8y23x2
12x
2ab23c
-24y2x
81x42y
x2
-5m4n28
6x2y2