-6y
6x2-2x+9
-4.2a2+4.8a+1.1
-3a+1710b-79
5x2+4x+3
-28a2+22a
16x+16
-7144ab+221a+3b
-2a-11b
-x2+12x-2
-2x+6y+3
-21x+15y
-12a+8b-16
12x-10
-19x-4
3a-15
-3x-14
-32a+3b
11x3-13
31x6+176
11a20+47b20
x-2
-16a4b3
3x2y
72p4q3r5
3a4b2c32
-18ab4c3
2a5b2c3
-p5q4r425
a9b11c784
2m23n3
-6x2
-9q2pr6
-3x16
9z2x2
8n4m
b32ac2
81x42y
2a29b
-c2ab
-7m2n25