Math crossword

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Across
  1. 3. Any combination of values and operations that can be used to show things belong together and Compare to one another
  2. 4. An action performed upon one or two numbers to produce a resulting number
  3. 8. A grouping together of one or more factors such as 4xy
  4. 9. A mathematical function that is the sum of a number terms
  5. 10. <
  6. 14. To change two or more terms to just one term so that you can perform other processes
  7. 15. Resulting from bringing ideas together in imagination
  8. 17. A polynomial with three terms
  9. 18. A letter that always represents an unknown number or what you are solving for in an problem
  10. 19. The property of something that is great in magnitude
Down
  1. 1. To combine all that can be combined,reduce the numbers of terms, and put an expression in an easily understandable form
  2. 2. A small number written slightly above a Variable or number
  3. 3. A grouping of terns or values that use a Sign to show an equal relationship
  4. 5. A constant number that serves as measure of some property
  5. 6. Independent of order
  6. 7. A polynomial with two terms
  7. 11. A value or number that never changes in Equation
  8. 12. To find the answer
  9. 13. >
  10. 16. of a function An x-value for which f(x)=0