Question

When solving x2 - 4x = -7 by completing the square what value is added to both sides of the equation?

Answer 1

anyone?

Answer 2

\[(-4/2)^2\] or 4
are you familiar with the general form of the quadratic equation?
For a polynomial \[Ax^2+Bx+C=0\] completing the square is done by adding \[(B/2)^2\] to both sides