Radical Crossword Puzzle

1234567891011121314151617181920
Across
  1. 2. the number that the index is above
  2. 4. what the real number b is called
  3. 8. if "a" is a nonnegative real number, the nonnegative number "b" such that b^2=a, denoted by b=√a
  4. 10. what the real number a is called
  5. 11. "numbers which include both rational and irrational numbers"
  6. 15. tells us how many times to use the number in multiplication
  7. 16. defined as i=√-1, where i^2= -1
  8. 18. the form that contains sets of real and imaginary numbers
  9. 19. "a technique used to help remember the steps required to multiply two binomials."
  10. 20. the opposite pair of either a+bi or a-bi
Down
  1. 1. what we refer to the radicand and radical sign together
  2. 3. "a function that maps the set of nonnegative real numbers onto itself"
  3. 5. "when squared, gives a negative result"
  4. 6. the product of two nth roots is the nth root of the product of the radicands
  5. 7. the symbol that we use to denote the principal square root
  6. 9. a system of numbers based on adding multiples of i to real numbers
  7. 12. expressions with exponents that are rational numbers
  8. 13. "written as n√a , where n is a positive integer greater than or equal to 2"
  9. 14. the number under the radical sign
  10. 17. a real number that cannot be written as a simple fraction