If $\begin{bmatrix} 2 & 3\\5 & 7\end{bmatrix}\begin{bmatrix} 1 & -3\\-2 & 4\end{bmatrix}=\begin{bmatrix}-4 & 6 \\-9 & x \end{bmatrix}$, then the value of x is : |
13 -13 9 5 |
13 |
The correct answer is Option (1) → 13 $\begin{bmatrix} 2 & 3\\5 & 7\end{bmatrix}\begin{bmatrix} 1 & -3\\-2 & 4\end{bmatrix}=\begin{bmatrix}-4 & 6 \\-9 & x \end{bmatrix}$ $⇒\begin{bmatrix}-4 & 6 \\-9 & 13 \end{bmatrix}=\begin{bmatrix}-4 & 6 \\-9 & x \end{bmatrix}⇒x=13$ |