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Imaginary Numbers

Write the following numbers without using $i$.  

  1. $i$
  2. $i^2$
  3. $i^3$
  4. $i^4$
  5. $i^5$
  6. $4i^3$
  7. $6i^9$
  8. $8i^{12}$
  9. $2i^2$
  10. $5i^3$
  11. $7i^6$
  12. $11i^9$
  13. $21i^{14}$
  14. $56i^{16}$
  15. $7i^{20}$
  16. $9i^{33}$
  17. $3i^{32}$
  18. $4i^{30}$
  19. $(5i^2)(6i^2)$
  20. $(7i^3)(8i^7)$

Answer Key: