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| 1. |
Express (2 – 3i)3 in the form (a + ib). |
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Answer» We have, (2 – 3i)3 = 23 – 3 × 22 × 3i – 3 × 2 × (3i)2 – (3i)3 = 8 – 36i + 54 + 27i = 46 - 9i. |
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