Which of the following equations below is NOT a linear inequality? Y< 5x2 - 5
y> 3x + 2

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).

Landon wrote that 3−2.6=4. which statement about his answer is true?

Pls brainliest will be awarded if answer is correct