1. 8.3 Add and subtract Rational Expressions

2. To Add and Subtract Find Common Denominators Combine Like Terms
Factor/Simplify

3. Add and Subtract with Like Denominators
Example 1

4. Add and Subtract with Like Denominators
Example 2

5. Add and Subtract with Like Denominators
Example 3

6. Find the Least Common Multiple of Polynomials
Example 4
Find the least common multiple for each pair.
A. 4x2y3 and 6x4y5
B. x2 – 2x – 3 and x2 – x – 6

7. Find the Least common Multiple of Polynomials
C. D.
Factor each polynomial FIRST

8. Add and Subtract
Example 5
(3x)
(2)

9. Add and Subtract
Example 6
(5)
(2)

10. Example 8
Subtract

11. Add and Subtract
Example 9
(x-7)
(6)

12. Add and Subtract
Example 10

13. Add and Subtract
Example 11
x – 3
x2 + 3x – 4 + 2x
x + 4

14. Add and Subtract
Example 12 x
x + 2 – 8
x2 – 4

15. Example 13
Subtract

16. Example 14
Subtract

17. Add and Subtract
Example 7
(4x²)
(3)

18. Example 15

19. Add Fractions
(3)
(5)