trevorhardy trevorhardy

18-08-2017
Mathematics

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Write the product in standard form. ( 4 + 7i)( 7 + 7i)

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Banabanana Banabanana

18-08-2017

(4 + 7i)(7 + 7i)
28 + 28i + 49i + 49i²
28 + 77i + 49(-1)
28 - 49 + 77i
-21 + 77i

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