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# Lecture 1.4 bt

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### Lecture 1.4 bt

1. 1. Today’s Agenda • Attendance / Announcements • Questions from HW? • Section 1.4 Rational Expressions
2. 2. Factoring Review Remember to always factor out the G.C.F. and keep factoring until you can‟t factor anymore! xxx 963 23
3. 3. Factoring Review Remember to always factor out the G.C.F. and keep factoring until you can‟t factor anymore! xx 188 3
4. 4. Rational Expressions An expression that can be written as the quotient of two polynomials. 2 532 2 x xx 1 8 x x 2 note*: We need to make sure…..
5. 5. Simplifying Rational Expressions Cancellation Property Q P QS PS
6. 6. 5 5 x x Simplifying Rational Expressions Cancellation Property
7. 7. 4 4 x x Simplifying Rational Expressions Cancellation Property
8. 8. Simplify each expression…
9. 9. Simplify each expression…
10. 10. Multiplying Rational Expressions (p. 29) Same as fraction arithmetic “Multiply straight across…top and bottom”
11. 11. Perform each operation…
12. 12. Dividing Rational Expressions (p. 29) Same as fraction arithmetic “Dividing by a fraction  Multiply by the reciprocal”
13. 13. Perform each operation…
14. 14. Adding / Subtracting Rational Expressions “Just like with fractions…We need a….”
15. 15. Perform each operation…
16. 16. Perform each operation…
17. 17. Complex Fractions (p. 33) 1 3 2 x x
18. 18. Complex Fractions (p. 33) k k 5 1 5 6
19. 19. Classwork / Homework • Page 34 1 – 45 (every other odd) 47, 55, 58 ...Ask questions if you have „em! ...And review factoring!