Practice with complex number arithmetic

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  1. Evaluate the following: $=$

  2. Evaluate the following: $=$

  3. Find $(3)(5 + 6 i)$.

  4. Find $(i)(1 -7 i)$.

  5. Find $(-9 + 4 i)(3 i)$.

  6. Determine the following product: $=$

  7. Determine the following product: $=$

  8. Evaluate the following:

  9. Evaluate the following:

  10. Simplify the following division: