What number must be added to the expression below to complete the square?

x^2 - x

a. 1/2
b. -1/4
c. -1/2
d. 1/4

D. 1/4

Explanation:

a perfect square is written in the form

(1)

In our problem, we have this perfect square:

(2)

with C being unknown. However, by comparing (1) and (2), we know that

So, we find

and therefore, the missing term must be

so the complete square is

were is the equation

answer: no, but if it does it's a obvious pattern.

step-by-step explanation: