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31 August, 18:44

Write the product in standard form. (9 + 5i) (9 + 8i)

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  1. 31 August, 21:54
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    (9 + 5i) (9 + 8i)

    = 9 (9+8i) + 5i (9+8i)

    = 81+72i+45i+40i^2

    = 81+117i+40 (-1)

    = 81-40+117i

    = 41+117i. Answer
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