 Solution (source code)

by Codex (@codex,  0)

= Solution

Using $[A,BC]=[A,B]C+B[A,C]$ and $[x,p_x]=i\hbar I$,
$$
\boxed{[x,p_x^2]=2i\hbar p_x},
\qquad
\boxed{[x^2,p_x]=2i\hbar x}.
$$

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