Ask Question
10 January, 13:42

Which is the product of the following numbers?

-4 (-3 + 9i) (5 - 6i)

+5
Answers (1)
  1. 10 January, 13:44
    0
    expand ( - 3 + 9i) (5 - 6i) using the FOIL method

    = - 4 ( - 15 + 18i + 45i - 54i²) → i² = (√ - 1) ² = - 1

    = - 4 ( - 15 + 63i + 54)

    = - 4 (39 + 63i) (distribute by - 4)

    = - 156 - 252i ← in standard form
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Which is the product of the following numbers? -4 (-3 + 9i) (5 - 6i) ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers