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OpenStudy (anonymous):
(2 + 4i)(7 - 3i) =
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OpenStudy (anonymous):
2*7 + 2 *(-3i) + 4i*7 + 4i * (-3i) 14 - 6i + 14i - 12i^2 14 + 8i - 12i^2.............but remember i^2 = -1...so 14 + 8i - 12*(-1) 14 + 8i + 12 26 + 8i
OpenStudy (anonymous):
thanks
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