Question 779344
Determine the number that will complete the square 
x^2+2/7x+? 
-----
Divde the coefficient of "x" by 2 to get 1/7
Square the result to get 1/49
-----
Cheers,
Stan H.
============

Answer is one of these: 1/49 - 2/49 - 4/49 - 1/7