1. Box Factoring or acb Method
Algebra Foundations
x2 - 4x + 4 x2 4
Box Factoring or
acb Method

2. Box Factoring
Solve by using the Box Factoring Method ?
x2 - 4x + 4 =

3. Box Factoring a b c or
acb Method
x2 - 4x + 4 a x2 c 4

4. Box Factoring a b c
x2 - 4x + 4
a c 4 x2 a x2
4x2 4 c

5. Box Factoring a b c
x2 - 4x + 4
a c 4 x2 a x2
4x2 4 c

6. Box Factoring a b c
x2 - 4x + 4 b a x2
4x2
-4x 4 c

7. Box Factoring a b c
-4x
4x2
x2 - 4x + 4
Find Factors a x2 4 c

8. Box Factoring -4x 4x2 x2 4 a b c 4x 1x a 2x 2x -4x -1x c -2x -2x

9. Box Factoring -4x 4x2 x2 4 a b c Look for a pair of numbers (factors)
that can make
this number 4x 1x a x2 2x 2x
-4x
-1x 4 c
-2x
-2x

10. Box Factoring -4x 4x2 x2 4 a b c 4x 1x NO a 2x 2x NO -4x -1x NO c -2x

11. Box Factoring -4x 4x2 x2 4 a b c 4x 1x a HOW? 2x 2x YES -4x -1x c -2x

12. Box Factoring a b c
-4x
4x2
x2 - 4x + 4
-2x +
-2x = a x2 4 c

13. Box Factoring a b c
-4x
4x2
x2 - 4x + 4
-2x
-2x a x2
-2x 4
-2x c

14. Box Factoring a b c
x2 - 4x + 4 X X x2
-2x
-2x 4

15. Box Factoring a b c
x2 - 4x + 4 X -2 X x2
-2x
-2x 4

16. Box Factoring a b c
x2 - 4x + 4 X -2 X x2
-2x -2
-2x 4

17. Box Factoring a b c
x2 - 4x + 4 X -2 X x2
-2x -2
-2x 4

18. Box Factoring x2 4 a b c Rewrite statements X -2 X -2x -2 -2x

19. Box Factoring a b c
x2 - 4x + 4 X -2 X x2
-2x -2
-2x 4
(x-2) (x-2)

20. Box Factoring
x2 - 4x + 4
(x-2) (x-2) =
Final Answer