Find the directional derivative of p=4e^2x-y+z at points (1,1,-1) in direction towards the point (-3,5,6) answer this​

Luke wants to reduce the area of his rectangular garden by 1/4 the expression 14/w can be used to represent this change. what is another way to write this expression?

What is the value for this expression? 2e-5

A+b= 17, ab=70, find the value of |a-b|