1. Factor. x2 – 10x + 25 64x2 – 16x + 1 Multiply. 3. (4x- 3y)(3x +4y)
Warm-Up
Factor.
x2 – 10x + 25
64x2 – 16x + 1
Multiply.
3. (4x- 3y)(3x +4y)
Answers:
(x-5)2
(8x-1)2
12x2y2 + 7xy - 12y2

2. Announcements: Objective: P5 Factoring Polynomials
Quiz P5 on 8/15&16!!! P5&6 Test– 200 points on 8/21!!
Objective: P5 Factoring Polynomials
Factoring GCF,
Trinomials,
By grouping,
Difference of Two Squares

3. Factoring GCF 8(2x – 3) 6x2(x2 – 3x + 2) 6x2(x – 2)(x-1) YOU TRY:
Ex1: 16x – 24
Ex 2: 6x4 -18x3 + 12x2
8(2x – 3)
6x2(x2 – 3x + 2)
6x2(x – 2)(x-1)
YOU TRY:
12x5 – 8x4 + 4x2
4x2(3x3 – 2x2 + 1)

4. Factoring Perfect Trinomials
* (a+b) or (a-b)2
Ex 3: x2+12x +36
(x +6)(x+6)
(x+6)2
Ex. 4: 25x2-60x + 36
(5x-6) (5x-6)
(5x-6)2

5. YOU TRY:
3x2 -2x -5
6x2-18x-60
(3x-5)(x+1)
6(x-5)(x+2)

6. Factoring by Grouping Ex. 5: x3 - 2x2 + 5x -10
YOU TRY:
3x3 - 2x2 - 6x + 4
(3x-2)(x2-2)

7. Review continued
Ex. 7: x * Remember to take the square root of the 1st term and the last term. One factor is positive and one factor is negative (x+2)(x-2)
Ex.8: 81x2- 49
(9x-7)(9x+7)

8. YOU TRY:
(6x-7y)(6x+7y)
36x2-49y2

9. Summary:
Which method do you like the best and why? Which method do you think is the hardest for you and why?