To find an equivalent expression for \((8-2i) + (-2+4i) - (5+4i)\), we can follow these steps:
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Distribute the negative sign in front of the third term: \[ (8 - 2i) + (-2 + 4i) - 5 - 4i \]
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Combine all the real parts and all the imaginary parts:
- Real parts: \(8 - 2 - 5 = 1\)
- Imaginary parts: \(-2i + 4i - 4i = -2i\)
Thus, combining these results gives: \[ 1 - 2i \]
The equivalent expression is: \[ \boxed{1 - 2i} \]