What is the sum? 3x^2-2x-1/x-5 + -2x^2+x-5/x-5

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

What percent of the circle below is shaded?

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180