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OpenStudy (anonymous):
(2+3i)(2-3i) simplify. Plz help!!
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OpenStudy (anonymous):
\[(2 + 3i)(2 - 3i) = 4 - 6i + 6i - 9i^{2} = 4 - 9i^{2} = 4 + 9 = 13\]
OpenStudy (anonymous):
Thank you
OpenStudy (anonymous):
You're welcome :)
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