Question

If using the method of completing the square to solve the quadratic equation

x^2+x+9=0, which number would have to be added to "complete the square"?

Answer 1

Explanation:

To complete the square for the quadratic equation x^2 + x + 9 = 0, we need to add (1/2)^2 = 1/4 to both sides of the equation. This is because we want to turn the left-hand side of the equation into a perfect square.