Math Crossword Thingy

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Across
  1. 2. The small number that indicates which root to take
  2. 6. The bottom number of a fraction
  3. 8. To remove radicals from a denominator
  4. 9. The result of multiplication
  5. 11. An expression with a base and exponent
  6. 14. A number with a whole-number square root
  7. 16. Tells how many times a base is multiplied by itself
  8. 17. To rewrite a radical in simplest form
  9. 18. The number multiplying a variable
  10. 19. Radical expressions that have the same index and radicand
  11. 20. The expression involving a root
Down
  1. 1. A letter that means an unknown value
  2. 3. The top number of a fraction
  3. 4. The result of division
  4. 5. The operation, that, when squared, gives the original number
  5. 7. The result of a radical equation
  6. 10. The operation, that, when cubed, gives the original number
  7. 12. A number that cannot be written as a ratio (aka fraction)
  8. 13. A number multiplied by itself three times
  9. 15. The number inside the radical symbol