Presentation is loading. Please wait. # Sums and Differences of Rational Expressions

## Presentation on theme: "Sums and Differences of Rational Expressions"— Presentation transcript:

Sums and Differences of Rational Expressions
Objective: to add and subtract rational expressions

Rules for adding and subtracting fractions
Find the least common denominator (LCD) of the fractions (that is the least common multiple of the denominators.) Express each fraction as an equivalent fraction with the LCD as the denominator Add or subtract and then simplify.

Examples Simplify The LCM of 5 = 5 • 1 and 15 = 5 • 3 is 15
2. multiplying by 1 will not change a number 3.

Example with monomials
Simplify The LCM of 3x2y, 12x, and 8y2 is 24x2y2 3.

Example with Polynomials
Simplify Factor The LCM is (x + 3)(x – 3)(x – 1)

Be careful, its not done yet

factor

Try These! Simplify 1. 2. 3. 4. 1. 2. 3. 4. End Show

Try These!

Try These!

Try These!

Try These!

Download ppt "Sums and Differences of Rational Expressions"

Similar presentations

Ads by Google