-2x+3y-2
6x2-2x+9
1.5a-0.9
13a2-a
-x+5
7x-7
136x-114
-7144ab+221a+3b
-6x+9y
11a+2b-8
13a-5b-7c
32x+40
x-7
58x2-52y2
-2x+27
53x-54
3128a+8615b
-3a+47b
x2+11y2
11x6-5y6
9x35+71y35
4
48a2bc
4abc25
-56x5y7
3a4b2c32
-72a3b4c5
-x7y8z948
-189a9b3c5
3x5y4
3a2
-6x2
-5x3y
-8y23x2
-10ab3
6ab
3x47
225c4a4b6
x2
-a23
-7m2n25