-7y-5
-3xy-4x-2
920y
-45a2-2a
-2x2+3x+4
-2a+3b
16x+16
10x2+78x+13
-2a-11b
-5x+9y+4
13ab+2a+5b
48a-36b
5x2-9x
18a+115b-27
-54x-8
3a+24
-476x-298
-18x+4
3a4+12
a6-b6
27x4-214
x-2
48a2bc
20x3yz43
72p4q3r5
3a4b2c32
-18ab4c3
-96x5y3
-p5q4r425
-25x10y63
-23m3
4ab
-8p2q7r83
-4m3n
12x
6ab
b32ac2
81x42y
-8x2y3z
2pq3
-4p3r3