cruciverba monomi

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Across
  1. 3. 4xy-7xy-xy
  2. 5. 8a:3b2
  3. 7. 3ab2+5ab2-7ab2
  4. 8. 5a:8ab*4a
  5. 9. 4c-2c-8c
Down
  1. 1. 8xy+6xy-5xy
  2. 2. 6-b*4ab
  3. 4. -2a*(3b2)+b(-4ab)+12a2b2:3a
  4. 6. 5b*4a
  5. 8. -3c+3c+5c
  6. 10. 11x+6x-8x-3x