Question

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

Answer 1

(a+b) ^ 2 = a^2 + b^2 + 2*a*b

Answer 2

well,yes in this way u have 2ab but in that equation it's -x so u will discover that b=-1,2 ! so \(x^2 - x - \color{red}{\frac{1}{4}} \) make it complete square.

Answer 3

@LewisSparrow96