**Simplify the following rational expression.**
$\dfrac{17z^3+17z^2}{34z^3-51z^2}=$ [[☃ expression 1]]
**Which values of $z$ make the expression undefined?**
[[☃ radio 1]]
Learn To Be brings free online tutoring students around the United States. Volunteer and gain community service hours while helping students who need it./p>