If \( A=\left[\begin{array}{ll}1 & -1 \\ 2 & -1\end{array}\right], ... VIDEO
If \( A=\left[\begin{array}{ll}1 & -1 \\ 2 & -1\end{array}\right], B=\left[\begin{array}{ll}a & -1 \\ b & -1\end{array}\right] \) and \( (A+B)^{2}=\left(A^{2}+B^{2}\right) \) then find thehttps://bit.ly/YTAI_PWAP https://www.pw.live/
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