 Presentation on theme: "Add/Subtract Rational Expressions"— Presentation transcript:

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

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.

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

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 ______.

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 __________________________.

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

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

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.

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

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

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

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