Find the values of `[i^18+(1/i)^25]^3`

Explanation

To solve the expression \([i^{18} + (1/i)^{25}]^3\), we will break it down step by step.

### Step 1: Simplify \(i^{18}\)
The powers of \(i\) (where \(i = \sqrt{-1}\)) cycle every 4 terms:
- \(i^1 = i\)
- \(i^2 = -1\)
- \(i^3 = -i\)
- \(i^4 = 1\)
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