In triangle abc , with explanations steps

How to write 3 tenths and 5 tenths as a decimal

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 number should be added to both sides of the equation to complete this square? x^2-10x=7