Question

please tell me pleasehelp​

Answer 1

Answer:

$x_{1}$ = 6

Step-by-step explanation:

$\left[\begin{array}{cc}1&x\\-x&-2\end{array}\right]$ = $\left[\begin{array}{cc}5&-4\\1&-x\end{array}\right]$

- 2 - (- x²) = - 5x - ( - 4)

x² + 5x - 2 - 4 = 0

x² + 5x - 6 = 0

$x_{1}$ = 6 and $x_{2}$ = - 1