Question #e84e5

1 Answer
Sep 27, 2017

To make a perfect Square add the square of half coefficient of x

x^2-1/3x
Coefficient of x is -1/3
its half is -1/6
its Square is 1/36

add 1/36 we will get the perfect square
x^2-1/3x+1/36=(x-1/6)^2

Check
(x-1/6)^2=x^2-2x/6+1/36=x^2-x/3+1/36