Radical Crossword Puzzle

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Across
  1. 2. "written as n√a , where n is a positive integer greater than or equal to 2"
  2. 4. the form that contains sets of real and imaginary numbers
  3. 8. the product of two nth roots is the nth root of the product of the radicands
  4. 11. what we refer to the radicand and radical sign together
  5. 13. "when squared, gives a negative result"
  6. 15. if "a" is a nonnegative real number, the nonnegative number "b" such that b^2=a, denoted by b=√a
  7. 16. the opposite pair of either a+bi or a-bi
  8. 17. expressions with exponents that are rational numbers
  9. 20. what the real number b is called
Down
  1. 1. "a technique used to help remember the steps required to multiply two binomials."
  2. 3. system of numbers based on adding
  3. 5. tells us how many times to use the number in multiplication
  4. 6. a real number that cannot be written as a simple fraction
  5. 7. of i to real numbers
  6. 9. the symbol that we use to denote the principal square root
  7. 10. "numbers which include both rational and irrational numbers"
  8. 11. what the real number a is called
  9. 12. "a function that maps the set of nonnegative real numbers onto itself"
  10. 14. defined as i=√-1, where i^2= -1
  11. 18. the number under the radical sign
  12. 19. the number that the index is above