Algebra II Mr. Gilbert

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Algebra IIMr. Gilbert

• Chapter 6.3
• Solving Quadratic Functions by Factoring
• Standard Honors

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Agenda

• Warm up
• Homework
• Check your answers
• Applet
• Lesson

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display the answers.
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Lesson 3 Contents
Solving Quadratic Functions by Factoring
Example 1 Two Roots (4) Example 2 Double Root
(3) Example 3 Greatest Common Factor (3) Example
4 Write an Equation Given Roots (3)
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Example 3-1a
Answer The solution set is 0, 4.
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Example 3-1a
Check Substitute 0 and 4 in for x in the
original equation.
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Example 3-1a
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Example 3-1b
Answer 0, 3
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Example 3-2a
Answer The solution set is 3.
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Example 3-2a
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Example 3-2b
Answer 5
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Example 3-3a
Read the Test Item
You are asked to find the positive solution of
the given quadratic equation. This implies that
the equation also has a solution that is not
positive. Since a quadratic equation can either
have one, two, or no solutions, we should expect
this equation to have two solutions.
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Example 3-3a
Solve the Test Item
Both solutions, 3 and 7, are listed among the
answer choices. However, the question asks for
the positive solution, 7.
Answer D
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Example 3-3b
Answer C
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Example 3-4a
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Example 3-4a
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Example 3-4b
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Homework Review
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Homework - Honors
See Syllabus 6.3 pp. 304 14-40 even, 42-47
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Homework
See Syllabus 6.3 pp. 304 14 40 even, 42-45