\fUse the Chain Rule to find the indicated partial derivatives. z =x4+xzy, x= s+2t-u, y = stu

If z = f(x, y), where fis differentiable, and x = g(t) -5 6 = h(t) y -8 fy(-5, 8) = 3 fx(-5, 8) = find dz/dt when t = 5. dz _ dt