Evaluate the following polynomial at: $y=-1$ \[ -3 y^{2}-2 y^{3} \] Answer

Step 1 ：The question is asking to evaluate the polynomial $-3 y^{2}-2 y^{3}$ at $y=-1$.

Step 2 ：Substitute $y=-1$ into the polynomial: $-3(-1)^{2}-2(-1)^{3}$

Step 3 ：Simplify the expression to get the result: $-3(1)-2(-1)$

Step 4 ：After simplifying, we get the result as -1.

Step 5 ：Final Answer: The value of the polynomial $-3 y^{2}-2 y^{3}$ at $y=-1$ is \(\boxed{-1}\).