Here are two steps from the derivation of the quadratic formula. What room place between the first step and the second step?

Answer:
Step-by-step explanation:
The problem solver "completed the square." He or she took half of the coefficient of x and squared the result, and then added this square and subtracted this square to/from both sides of the equation.
Answer:
Completing the Square
Step-by-step explanation:
A.p.e.x ;)