When the coordinates (1,1), (4,,1) and (4,-2) are joined, which shape is formed

If f(x)=2x+2and g(x)=x^3, what is (g•f)(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).

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x