[4−74−5]\left[\begin{array}{ll} 4 & -7 \\ 4 & -5 \end{array}\right][44−7−5]
[2−23−1]\left[\begin{array}{ll} 2 & -2 \\ 3 & -1 \end{array}\right][23−2−1]
[0−3−10−6]\left[\begin{array}{cc} 0 & -3 \\ -10 & -6 \end{array}\right][0−10−3−6]
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