2x-16
-a2-8a+1
920y
53x2-2320x+19
6x-4
-xy-11x+9y
-16x2-16x+56
-120y2-112y
-6x+9y
3a-3c
5a+5b-c
35a-28b+112
-12a+8b-16
-32a+2b-32
-19x-4
-29x-70
-2a-6310b
x+23y
3x4+54
-6x35-3835
9x35+71y35
18a5-5b
33x2y
-6m3n4
72p4q3r5
-5a2b4c4
-250x4y2
200x5
32x6y7
a9b11c784
2m23n3
-3x22
9ab
-28a33b2
12x
4y3x2z
3x47
81x42y
-94x
-y2z
2xy2z