Add/Subtract and Multiply Polynomials

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Across
  1. 2. highest exponent value
  2. 6. expression written as a sum/difference
  3. 7. number in front with highest degree value
  4. 8. values being multiplied to form a product
  5. 10. a term with a degree of three
  6. 11. a product consisting of a single term
  7. 14. a term that doesn't change
  8. 16. combination of variables, numbers, and symbols
  9. 17. polynomial consisting of three terms
  10. 19. letter or symbol, representing an unknown number
Down
  1. 1. value of all exponents added together
  2. 3. an expression consisting of a single term
  3. 4. expression written as a product of factors
  4. 5. number in front of a variable
  5. 9. a term with a degree of two
  6. 12. a term consisting of numbers and no variables
  7. 13. polynomial consisting of no like terms, exponents are written in descending order
  8. 15. consisting of the same variables
  9. 18. a term with a degree of one
  10. 20. polynomials with two terms