If $\left|\begin{array}{ccc}x^2+x $x+1 $x-2$ 2 x^2+3 x-1 $3 x $3 x-3$ x^2+2 x+3 $2 x-1 $2…
If $\left|\begin{array}{ccc}x^2+x $x+1 $x-2$ 2 x^2+3 x-1 $3 x $3 x-3$ x^2+2 x+3 $2 x-1 $2 x-1\end{array}\right|=x A+B$, where $A$ and $B$ are determinants of order 3 not involving $x$, then $|A|=$