Solving Quadratic Equations by Completing the Square
Warm-Up
What are the two solutions of the equation?
x= v5 and x = -5
Solve the quadratic equation by completing the square.
0 = x2 - 6x + 4
4 = x2 - 6x
- 4 + 9 = (2x2 - 6x +9)
5=(x-3)2
x = 3 + v5 and x = 3 - 5
x = 5+ ε and x = 5 -
x=
E and x = -
wu