STANDARD 7: RATIONAL EXPRESSIONS
How to Simplify Rational Expressions
1. Factor the numerator and denominator completely
2. Cancel the common factors
2. Cancel the common factors
See this common Mistake and DO NOT MAKE IT!
Multiplying & Dividing Rational Expressions
How to multiply rational expressions:
1. Factor completely
2. Multiply straight across
3. Simplify
How to divide rational expressions:
1. Multiply by the reciprocal
2. Factor completely
3. Multiply across
4. Simplify
1. Factor completely
2. Multiply straight across
3. Simplify
How to divide rational expressions:
1. Multiply by the reciprocal
2. Factor completely
3. Multiply across
4. Simplify
Watch this video on multiplying rational expressions: http://www.virtualnerd.com/algebra-2/rational-functions/multiply-example.php
Adding & Subtracting Rational Expressions
How to add and subtract rational expressions:
1. Factor numerator and denominator completely
2. Find the LCD (least common denominator)
3. Multiply each expression by its missing factor
4. Add or subtract the numerator
5. Write this over the common denominator
6. Simplify if necessary!
See these examples:
1. Factor numerator and denominator completely
2. Find the LCD (least common denominator)
3. Multiply each expression by its missing factor
4. Add or subtract the numerator
5. Write this over the common denominator
6. Simplify if necessary!
See these examples:
Check out this video: http://www.virtualnerd.com/algebra-1/rational-expressions-functions/different-denominators-add-example.php
Standard 7 Practice | |
File Size: | 34 kb |
File Type: | png |