Question 853289
x^2 - x + 4 to make it equal to (x+2)^2

x^2 - x + 4 to make it equal to (x^2+4x+4)

X^2-x+4 +A = x^2+4x+4

A = x^2+4x+4 -x^2+x-4

A= 5x