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 :

7 and 2 7 and 4 -4 and 3 7 and -3

7 and -3

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