I got this question wrong on a test, I know I set up my expression incorrectly but I don't know how/where. Can I please ask that when you reply, to include as much detail as possible so I understand how I went wrong?

Find (partialw/partialy)_x and (partialw/partialy)_z at the point (w,x,y,z)=(-3,-1,-1,1) if w=3x^2Y62+3yz-3z^3 and x^2+y^2+z^2=3

dw 2v2 + 3yz - 3z* and x" + +7 74 = 3. Find and at the point (w, x, y, z) = (-3, -1, -1,1) if w=3x-y dy X Z Ow - 15 X (Simplify your answer.) Ow 3 Z (Simplify your answer.)