$($i$)A$

Calculus $24$I.MVC$.$CDE. $3$

Let $u=\frac{p^2-q}{q-r^2},$ where $p=x^2-y+z,q=x-y+z^2,$ and $r=x+y-z.$ Find del$\frac{u}{d}$ely at the point $(x,y,z)=(1,2,2).$ Round your final answer to two decimal places.

Answer: