Crossword

1234567891011
Across
  1. 3. With two terms
  2. 5. Change signs
  3. 8. Is to
  4. 9. agreement
  5. 10. With three terms
  6. 11. Customary
Down
  1. 1. Change is the only..
  2. 2. A common type of expression
  3. 4. better together
  4. 6. x and y
  5. 7. With any number of terms
  6. 9. Regarding powers of numbers