-12c+7
-5x2+2x-7
7.3x2-2.5x+1.8
118x2+34x
2ab+7a-10b
3y2-20y
83x-1
136a2-98a+263
-2a-11b
-5x+9y+4
2ab+15a-17b
12x+18y-30
-0.9a2-4.5a+3.6b
-8x-9y
-6x+19
6x-25y
154a+7
-3415a-313b
11x3-13
-6x35-3835
11x6-136
11a12-b12
48a2bc
15a2b2c
-56x5y7
-x4y442
-250x4y2
-p9q5r496
2a4b4c47
-9m5n47
-4y3x
-3x22
-5x3y
-3x16
9z2x2
6ab
m24n
225c4a4b6
-8x2y3z
103a2
-4b