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What is the result of the commutation relation between the creation operator and a power of the annihilation operators in simple harmonic oscillator problem?

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  • $\begingroup$ In the book named quantum mechanics by Nouredine zettili , you can see this topic in detail. $\endgroup$
    – Tooba
    Sep 29, 2018 at 6:42

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$$[A,B^{2}]=[A,B]B-B[B,A]$$
Can you generalize that?

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