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10.4 Addition and Subtraction: Like Denominators Goal: to add and subtract rational expressions with like denominators.

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Presentation on theme: "10.4 Addition and Subtraction: Like Denominators Goal: to add and subtract rational expressions with like denominators."— Presentation transcript:

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2 10.4 Addition and Subtraction: Like Denominators Goal: to add and subtract rational expressions with like denominators

3 To add and subtract rational expressions with like denominators… Keep the denominator and add or subtract the numerators (just like adding like terms) Remember to simplify your final answer

4 What does it mean to be simplified? Your answer has to be completely factored (the numerator and denominator) any common factors must be canceled out

5 Add & Subtract Rational Expressions When the denominators are the same, add or subtract the numerators and write the sum or difference over the common denominator.

6 3m

7 Add & Subtract Rational Expressions

8 3x 2 +4x-15 - 454

9 Add & Subtract Rational Expressions

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11 x + 4 Factors of ACSum=B

12 Subtracting RE When you subtract a RE remember to distribute the minus sign to the numerator of the 2 nd RE

13 Subtract:

14 Subtract Rational Expressions

15 Subtract fractions: ( ) 2

16 Subtract fractions:

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20 Assignment Page 443 2-32 even Answer must be factored


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