Complex Equations

\begin{aligned} (2-3i)z + (5+i)w &= 19-4i\\ (1-i)z + (2+i)w &= 9-i \end{aligned}

Let $z$ and $w$ be the complex numbers satisfying the equations above.

Compute $|z+w|^2$.

Note: $i^2 = -1$, and $|z|$ is the absolute value of $z$.

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