Question

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

Answer 1

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 2

Completing the Square

Explanation:

A.p.e.x ;)