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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
Rational Equations
xx 3
4
1
3
6
1
Rational Equations
6
1
1
2
3 y
y
y
Rational Equations
0
3
3
52
8
3
4
xxx
Absolute Value Equations
QAorQAifQA
5x
note* use solution set notation
Absolute Value Equations
QAorQAifQA
32x
Absolute Value Equations
19675 x
Absolute Value Equations
634 mm
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
Solve the Quadratic Eq.
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.
Solve the Quadratic Eq.
Solve the Quadratic Eq.
1.7a Quadratic Equations
Another important property needed to
solve quadratics is the
“Square-Root Property”
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”
Square Root Property
17
2
m 114
2
y
Classwork / Homework
Page 57
1 – 17 odd, 23 – 37 odd,
65 – 73 odd
Page 67
1 – 23 odd

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Lecture 1.7a bt