-23c
3xy+4x-3y
-148a+445b
-56x+23y+12
2ab+7a-10b
10x-7y
920ab-310a-b
103x+12
7x-1
-5x+9y+4
13a-5b-7c
-2x2-4xy+5y2
-2x+83
58x2-52y2
-2x+27
2x-23y+59
154a+7
-3415a-313b
3a4+12
a6-b6
27x4-214
4
-35x4y5
15a2b2c
-56x5y7
-5a2b4c4
-72a3b4c5
-27m7n4
-p5q4r425
-25x10y63
3x
-3x22
-5x3y
9a2
3x8y2
6ab
-125a
-96m2n5
-b26a2
a2bc25
-4p3r3