Express of the complex number in the form `a + i b`.
`(-2-1/3i)^3`

Explanation

To express the complex number \((-2 - \frac{1}{3}i)^3\) in the form \(a + ib\), we will follow these steps:

### Step 1: Identify \(a\) and \(b\)
Let \(z = -2 - \frac{1}{3}i\). Here, \(a = -2\) and \(b = -\frac{1}{3}\).

### Step 2: Use the binomial expansion
We will use the binomial expansion for \((a + b)^3\):
\[
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