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9 September, 08:50

Write the sum or difference in the standard form a + bi. (7 + 5i) - (-9 + i)

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  1. 9 September, 12:05
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    (7 + 5i) - (-9 + i)

    = 7 + 5i - (-9) - (i)

    = 7 + 5i + 9 - i

    = 16 + 4i

    = 4i + 16
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