Question Evaluate $-b^{2}-2 b x^{2}-x$ when $x=-2$. Provide your answer below: FEEDBACK MORE

Step 1 ：Substitute $x=-2$ into the equation $-b^{2}-2 b x^{2}-x$

Step 2 ：The equation becomes $-b^{2}-2 b (-2)^{2}-(-2)$

Step 3 ：Simplify the equation to get $-b^{2}-8b+2$

Step 4 ：So, the simplified equation after substituting $x=-2$ is \(\boxed{-b^{2}-8b+2}\)