If $\begin{bmatrix}2x-1& 4x\\0 & y^2-1\end{bmatrix}=\begin{bmatrix}x+1 & 8\\0 & 24\end{bmatrix}$, then the value of (x+y) is :
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 7 and -3
On comparing corresponding elements
$2x-1=x+1⇒x=2$
$y^2-1=24⇒y^2=25⇒y=±5$
(x + y) = 7 or -3