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 :
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 13
$\begin{bmatrix} 2 & 3\\5 & 7\end{bmatrix}\begin{bmatrix} 1 & -3\\-2 & 4\end{bmatrix}=\begin{bmatrix}-4 & 6 \\-9 & x \end{bmatrix}$
$⇒\begin{bmatrix}-4 & 6 \\-9 & 13 \end{bmatrix}=\begin{bmatrix}-4 & 6 \\-9 & x \end{bmatrix}⇒x=13$