1. Review: 6.5c Mini-Quiz
1. Solve:
4x2 – 40 = –27x

2. Objective: Students will solve quadratic equations of the form ax2 + bx + c = 0 by factoring Perfect Square Trinomials.

3. Solving Quadratic Equations by Factoring Perfect Square Trinomials
Chapter 6 – Factoring and Solving Equations
Section 5d
Solve equations of the form ax2 + bx +c = 0

4. Check to see if it is a perfect square trinomial.
Solve
(2x + 9) 2 = 0
Check to see if it is a perfect square trinomial. ?
2(9)(2x) = 36x
36x = 36x TRUE
Solve: (2x + 9) 2 = 0
2x + 9 = 0 or 2x + 9 = 0
2x = –9
x = {–4.5}
CHECK YOUR ANSWER

5. Solve: 4x2 + 12x + 9 = 0
(2x + 3) 2 = 0
2x + 3 = or 2x + 3 = 0
2x = –3
Answer: x = { }

6. Homework
368/27-31 odd

7. Lesson Summary: Objective: Students will solve quadratic equations of the form ax2 + bx + c = 0 by factoring Perfect Square Trinomials.

8. Preview of the next Lesson: Objective: Students will solve quadratic equations by using multiple steps including expansion and FOIL.