Problem 46 of 7
Multiply complex number -5-3i by pure imaginary number -2i.
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use i^2=-1.
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Imaginary factor must be of form bi.
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Solution
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1. Distribute the imaginary factor to both terms.
2. Replace i^2 with -1.
3. Combine and write in standard form.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Leaving i^2 in the answer.