SOLUTION: What number should be added to complete the square of the expression? x^2-1/3x

Question 224086: What number should be added to complete the square of the expression?
x^2-1/3x
Found 2 solutions by rapaljer, MathTherapy:
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
The rule, if the coefficient of the x^2 term is 1, is to take HALF of the middle term coefficient, and SQUARE it!

In this case, take half of -1/3, and square it, which gives you 1/9.

R^2
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!
What number should be added to complete the square of the expression?
x^2-1/3x

You take of "b," which happens to be of , wich equals . You square this fraction to get: , which you then add.
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