Please help with 29. Perform the indicated operation and express result as a simplified complex number

Jared Eitnier asked Oct 24, 2023

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Jared Eitnier asked Oct 24, 2023

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14 votes

Solution

29. (3+4i)(3-4i)

We can operate and we have this:

$3\cdot3-3\cdot4i+3\cdot4i+(4i)(-4i)$

Solving we got:

We also know that:

Then we have:

Then the final answer is 25

Kadiro answered Oct 30, 2023

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