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# Lecture 1.7a bt

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### Lecture 1.7a bt

1. 1. Today’s Agenda • Attendance / Announcements – Exam 1 – Tuesday 9/24 • Covers Chapters 1.1 to 2.4 (skip 2.5) • Questions from HW? • Finish Section 1.6, Start 1.7 • Classwork / Questions
2. 2. Rational Equations xx 3 4 1 3 6 1
3. 3. Rational Equations 6 1 1 2 3 y y y
4. 4. Rational Equations 0 3 3 52 8 3 4 xxx
5. 5. Absolute Value Equations QAorQAifQA 5x note* use solution set notation
6. 6. Absolute Value Equations QAorQAifQA 32x
7. 7. Absolute Value Equations 19675 x
8. 8. Absolute Value Equations 634 mm
9. 9. 1.7a Quadratic Equations A valuable tool we can use to help solve quadratic equations is the “Zero Product Property” 0ba This is true when… 00 bora
10. 10. Solve the Quadratic Eq.
11. 11. When solving equations, a good idea is to try to set the equation equal to zero, and factor the expression into a product. This allows us to take advantage of the Zero Product Property.
12. 12. Solve the Quadratic Eq.
13. 13. Solve the Quadratic Eq.
14. 14. 1.7a Quadratic Equations Another important property needed to solve quadratics is the “Square-Root Property”
15. 15. Square Root Property Don’t confuse with simple square roots! 16 16 2 x4x When you take the square root of both sides of an equation, you need to take the “plus and minus”
16. 16. Square Root Property 17 2 m 114 2 y
17. 17. Classwork / Homework Page 57 1 – 17 odd, 23 – 37 odd, 65 – 73 odd Page 67 1 – 23 odd