Given that \(P = \begin{pmatrix} 2 & 3 \\ 1 & 2 \end{pmatrix}, Q = \begin{pmatrix} 2 & -3 \\ -1 & 2 \end{pmatrix}\), find \(2 * 2\) matrix R such that \(QR=P. \)
\(\begin{pmatrix} 1 & 12 \\ 4 & 1 \end{pmatrix}\)
\(\begin{pmatrix} 1 & 0 \\ 0 & 1 \end{pmatrix}\)
\(\begin{pmatrix} 7 & 12 \\ 4 & 1 \end{pmatrix}\)
\(\begin{pmatrix} 7 & 0 \\ 0 & 7 \end{pmatrix}\)
