Objective:

To multiply binomials

using Area Model

Draw a rectangle.Split it into four.

Fill in the following.

3 5

4

2

What is the area

of the rectangle?

6

2012

10

12 + 20 + 6 + 10 = 48 square units

2x 6

3x

1

What is the area of this rectangle?

2x

18x6x2

6

6x2 + 18x + 2x + 6 = 6x2 + 20x + 6

(2x + 6)(3x + 1) = 6x2 + 20x + 6

4x -3

5x

2

What is the area of this rectangle?

8x

-15x20x2

-6

20x2 - 15x + 8x - 6 = 20x2 - 7x - 6

(4x - 3)(5x + 2) =

20x2 - 7x - 6

Practice! Multiply the following.

1. (5x + 1)(2x + 4) =

2. (x + 7)(x – 3) =

3. (4x – 2)(x + 1) =

4. (3x + 2)(x + 2) =

5. (x + 5)(x + 5) =

6. (x – 5)(x – 5) =

7. (x + 5)(x - 5) =

8. (x + 1)(2x + 9) =

9. (x + 5)(x – 8) =

10. (3x + 2)(x + 7) =

11. (-5x + 2)(x + 3) =

12. (x + 2)(x + 2) =

13. (x – 2)(x – 2) =

14. (x + 2)(x - 2) =

You have 5 minutes to copy

this slide!