If Aa n dB are two matrices such that A ...

If `Aa n dB` are two matrices such that `A B=Ba n dB A=A ,t h e n` `(A^5-B^5)^3=A-B` b. `(A^5-B^5)^3=A^3-B^3` c. `A-B` is idempotent d. none of these

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