eginpmatrix a & b \ c & d \endpmatrix eginpmatrix a & b \ c & d \endpmatrix = eginpmatrix a^2 + bc & ab + bd \ ac + cd & bc + d^2 \endpmatrix = eginpmatrix 1 & 0 \ 0 & 1 \endpmatrix - go-checkin.com
Mar 01, 2026
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