Practice problem
Simplify z−2z4,\frac{z^{-2}}{z^4},z4z−2, if z≠0z\ne0z=0.
z−2z^{-2}z−2
z2z^{2}z2
z−6z^{-6}z−6
z6z^{6}z6
Type a concept, like “slope” or “photosynthesis”.
