I need your help in this exercise:

$\det B\ne0, \det A=0$, and I need to calculate $\det((A+B)^2−(A−B)^2)$

I need your help please!

  • 2
    $\begingroup$ Have you tried expanding those products already? $\endgroup$ – J. M. is a poor mathematician Dec 28 '16 at 16:34
  • $\begingroup$ Yes, and i didnt succed $\endgroup$ – daniel Dec 28 '16 at 16:37

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