Express the following in the form of `a + b i`:(i) `(-5i)(1/8i)` (ii) `(-i)(2i)(-1/8i)^3`

Explanation

Let's solve the given problems step by step.

### Problem (i): Express `(-5i)(1/8i)` in the form of `a + bi`.

**Step 1:** Multiply the terms.
\[ (-5i) \left(\frac{1}{8i}\right) = \frac{-5i}{8i} \]
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