Section 6.3 Notes.notebook · Section 6.3 Notes.notebook 3 May 26, 2015 6.3 Adding and Subtracting...
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Section 6.3 Notes.notebook 1 May 26, 2015
Transcript of Section 6.3 Notes.notebook · Section 6.3 Notes.notebook 3 May 26, 2015 6.3 Adding and Subtracting...
Section 6.3 Notes.notebook
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6.3 Adding and Subtracting
Rational Expressions
1) Connect addition and subtraction of rational expressions to the same operations with rational numbers.
2) Identify nonpermissible values when adding and subtracting rational expressions.
3) Determine, in simplified form, the sum or difference of rational expressions with the same denominators or with different denominators.
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Recall:What is the key concept for adding or subtracting fractions?
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Adding and Subtracting:• If there is a common denominator, add or subtract the numerators and write the answer as a rational expression with the new numerator over the common denominator.• Identify all nonpermissible values.• Simplify (factor and divide out common factors)
example 1 example 2
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Lesson Focus: Adding / Subtracting with Common Denominator
6.3 Adding and Subtracting Rationals
6.3 Adding and Subtracting Rational Expressions
Add or Subtract.Your Turn
A)
B)
C)
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Adding and Subtracting (NO Common Denominator):
Make equivalent fractions• Factor each denominator• Determine the LCD • Use the LCD to make equivalent fractions• Add/Subtract• Identify all nonpermissible values.• Simplify (factor and divide out • common factors)
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Practice: pages 336339
questions 2,5(a,c,d,e),7,8,15
