x^2-1/3x What number should be added to make this a perfect square trinomial? help me solve pls

Question

x^2-1/3x What number should be added to make this a perfect square trinomial? help me solve  pls

tkhunny · Answer

Try it out!  (a+b)^2 = a^2 + 2ab + b^2
Q: How does the second term realte to teh third term?
A: You have "2b".  How can you find "b^2"?

anonymous · Answer

well I got the answer as it was at the bottom of the practice if you do my problem what answer do you come up with? it should be 1/36 I just can't figure out how to get it

tkhunny · Answer

You have 2b.  In your problem statement, that is -1/3.

Calcualte b.  In your problem statement, that is -1/6 (dividing by 2)

Calculate b^2.  In your problem statement, that is (-1/6)^2 = 1/36