Ononot — Let A = \begin{pmatrix} 2 & 3 \\ 1 & 4 \end{pmatrix}. If mat

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Let $A = \begin{pmatrix} 2 & 3 \\ 1 & 4 \end{pmatrix}$ . If matrix $B$ is obtained by adding the first row to the second row, what is $\det(B)$ relative to $\det(A)$ ?