White the appropriate number in each bow to find the product 7 times 28 =7 ( 20 + _ ) = 140 +_ = _

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).

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

Write the expression as a single natural logarithm. 2 in a - 4 in y