Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators.

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Presentation transcript:

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible.

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 1 :

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 1 : EXAMPLE # 2 :

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 1 : EXAMPLE # 2 : EXAMPLE # 3 :

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 4 :

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 4 : Distributed ( - )

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 4 : Combined like terms…

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 5 : Even though this answer is correct, it is not in simplest from. We will need to simplify by factoring.

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 5 : Factor and simplify.

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 6 : Check to see if answer is in simplest form by factoring.

Rational Expressions – Sum & Difference 1 When fractions already have a common denominator, keep the denominator the same and add / subtract your numerators. Combine any like terms when possible. EXAMPLE # 6 : No common terms to cancel so answer is OK.