What is the value of x?
a. 13
b. 17
c. 119
d. 169

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).

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x

I'm marking the brainliest and it's 15 points