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ashking1

  • one year ago

Write the sum or difference in the standard form a + bi. ( 3 + 3i) - ( -6 + i)

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  1. SolomonZelman
    • one year ago
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    first, distribute the - next to parenthesis

  2. SolomonZelman
    • one year ago
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    - ( -6 + i) = ?

  3. ashking1
    • one year ago
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    i did that already

  4. SolomonZelman
    • one year ago
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    what did you get/

  5. SolomonZelman
    • one year ago
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    ?

  6. ashking1
    • one year ago
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    (3+3i)(6-i)

  7. SolomonZelman
    • one year ago
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    - ( -6 + i) = + 6 - i (because you multiply every term in the parenthesis times -1)

  8. SolomonZelman
    • one year ago
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    So, ( 3 + 3i) - ( -6 + i) = ( 3 + 3i) + 6 - i = 3 + 3i + 6 - i = 3 + 6 + 3i - i = ?? (you tell me)

  9. ashking1
    • one year ago
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    9+ 4i but these are my choices and it does not match -9 - 2i -3 + 4i 9 - 2i 9 + 2i

  10. SolomonZelman
    • one year ago
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    yes it does match, you just need to finish what I have started

  11. SolomonZelman
    • one year ago
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    3+6=? 3i-i=? so 3+6+3i-i=?

  12. ashking1
    • one year ago
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    oh ok 9+2i

  13. ashking1
    • one year ago
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    thank you can you help me with one more

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