Find $h(-3)$ and find one value of $x$ for which $h(x)=0$

Step 1 ：The problem asks to find $h(-3)$ and one value of $x$ for which $h(x)=0$. However, the function $h(x)$ is not given, so we cannot proceed with solving this problem.

Step 2 ：Final Answer: \(\boxed{\text{The question cannot be answered as the function } h(x) \text{ is not provided.}}\)