Sagot :
3xy, -6y, xy, {xy
2. 3x, y, 2x, y2
3. -ab, 0.5ab, 8by,
4. 8ab, -7b,-8ab, 3b
5. 4bm, 3bm, -10am, bm
6. -xy3, 10x3y,5x3,7xy3
7. -8xyz, -15yz, 0.3xyz, -15xyz
8. 10ds4,-ds, 10ds, 4dºs
3xy, -6y, xy, {xy
2. 3x, y, 2x, y2
3. -ab, 0.5ab, 8by,
4. 8ab, -7b,-8ab, 3b
5. 4bm, 3bm, -10am, bm
6. -xy3, 10x3y,5x3,7xy3
7. -8xyz, -15yz, 0.3xyz, -15xyz
8. 10ds4,-ds, 10ds, 4dºs