1. Multiplying binomials
This is called
the Box method

2. Multiplying binomials
A binomial has two terms.
We will be multiplying pairs of numbers.

3. Example 1 Multiplying binomials
– 3 x²

4. Example 1 Multiplying binomials
– 3 x²
-5x

5. Example 1 Multiplying binomials
– 3 x²
-5x
-3x

6. Example 1 Multiplying binomials
– 3 x²
-5x
-3x
+ 15

7. Example 1 Multiplying binomials
x² - 5x – 3x + 15 x²
-5x
-3x
+ 15
Write in standard form.

8. Example 1 Multiplying binomials
x² - 5x – 3x + 15
x² - 8x + 15
Combine Like Terms

9. Multiplying binomials
x² - 8x + 15
Final Answer

10. Example 2 Multiplying binomials
+ 2 x²

11. Example 2 Multiplying binomials
+ 2 x²
+ 4x

12. Example 2 Multiplying binomials
+ 2 x²
+ 4x
+ 2x

13. Example 2 Multiplying binomials
+ 2 x²
+ 4x
+ 2x
+ 8

14. Example 2 Multiplying binomials
x² + 4x + 2x + 8 x²
+ 4x
+ 2x
+ 8
Write in standard form.

15. Example 2 Multiplying binomials
x² + 4x + 2x + 8
x² + 6x + 8
Combine Like Terms

16. Multiplying binomials
x² + 6x + 8
Final Answer

17. Multiplying binomials
Your final answer
should always have an x² first
and a whole number at the end.
This is called standard form.

18. Multiplying binomials Try this one on your own:
(x – 6)(x + 2)
When everyone on your team is finished, click to check your final answer.

19. Multiplying binomials
x² - 4x - 12
Final Answer