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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Example 1 Add and subtract with the same denominator Find the sum or difference. Add numerators. Simplify.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Example 1 Add and subtract with the same denominator Find the sum or difference. Add numerators. Simplify. Factor and divide out common factor. Simplify.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Checkpoint. Find the sum or difference.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Example 2 Find the LCD of rational expressions Find the LCD of the rational expressions. Find the ______________________ of 3x3 and 4x4. least common multiple Write prime factorization. Circle common factors. Factors inside circle. Factors outside circle. The LCD of and is ______.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Example 2 Find the LCD of rational expressions Find the LCD of the rational expressions. Find the ______________________ of x2 – 4 and x2 + x – 2 least common multiple The LCD of and is __________________________.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Checkpoint. Find the LCD of the rational expression.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Checkpoint. Find the LCD of the rational expression.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Example 3 Add expressions with different denominators Find the sum Rewrite fractions using LCD, ______. Simplify numerators and denominators. Add fractions.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Example 3 Subtract expressions with different denominators Find the difference

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Checkpoint. Find the sum or difference.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Checkpoint. Find the sum or difference.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Checkpoint. Find the sum or difference.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Checkpoint. Find the sum or difference.

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**Add/Subtract Rational Expressions**

3.10 Add/Subtract Rational Expressions Pg. 189, 3.10 #1-21

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