adding and subtracting rational expressions.notebook pages/teacher pages/marin saville_files/margot...
TRANSCRIPT
Adding and Subtracting Rational Expressions.notebook
1
February 20, 2012
Mar 258:11 AM
Adding and Subtracting Rational Expressions
Feb 239:17 AM
Mar 258:13 AM
Rational expressions are added and subtracted in the same way that rational numbers are added and subtracted.
You must have common denominators before you add or subtract.
Feb 228:45 AM
Steps for Adding and Subtracting Rational Expressions:1. Factor, if necessary.2. Reduce within each fraction, if possible.3. Find an LCD.4. Write as equivalent fractions using the
LCD.5. Reduce, if possible.6. Leave the denominators in factored form.
Adding and Subtracting Rational Expressions.notebook
2
February 20, 2012
Jan 2810:18 AM
Example:
Feb 231:54 PM
Mar 299:05 AM Jan 2810:19 AM
Example:
Adding and Subtracting Rational Expressions.notebook
3
February 20, 2012
Mar 299:06 AM Jan 2810:19 AM
Example:
Mar 299:19 AM Jan 2810:19 AM
Example:
Adding and Subtracting Rational Expressions.notebook
4
February 20, 2012
Mar 299:23 AM Feb 232:15 PM
Jan 2810:23 AM
Example:
Mar 299:26 AM
Adding and Subtracting Rational Expressions.notebook
5
February 20, 2012
Jan 2810:23 AM
Example:
Mar 299:29 AM
Jan 2810:23 AM
Example:
Mar 299:34 AM
Adding and Subtracting Rational Expressions.notebook
6
February 20, 2012
Feb 228:47 AM
Pull
Pull
Feb 228:48 AM
Pull
Pull
Feb 228:49 AM
Pull
Pull
Feb 228:51 AM
Adding and Subtracting Rational Expressions.notebook
7
February 20, 2012
Mar 258:45 AM
Pull
Pull
Example 1Add and simplify.
Mar 258:46 AM
Example 2
Subtract and simplify.
Pull
Pull
Mar 258:56 AM
Example 3
Subtract and simplify.
Mar 258:56 AM
Example 4
Add and simplify.
Adding and Subtracting Rational Expressions.notebook
8
February 20, 2012
Mar 258:59 AM
Example 5
Add and simplify.
Pull
Pull
Mar 258:15 AM
Simplify:
Pull
Pull
Mar 258:17 AM
Simplify:
Since the denominators are not the same, they cannot be subtracted right away.
The lowest common denominator is 6x.
Mar 258:21 AM
Adding and Subtracting Rational Expressions.notebook
9
February 20, 2012
Mar 258:22 AM Mar 258:22 AM
Mar 258:22 AM Mar 258:23 AM
Adding and Subtracting Rational Expressions.notebook
10
February 20, 2012
Mar 258:23 AM Mar 258:23 AM
Mar 258:23 AM Mar 258:23 AM
Adding and Subtracting Rational Expressions.notebook
11
February 20, 2012
Mar 258:23 AM Mar 258:23 AM
Mar 258:23 AM Mar 258:23 AM
Adding and Subtracting Rational Expressions.notebook
12
February 20, 2012
Mar 258:24 AM Mar 251:03 PM
Mar 251:08 PM Mar 251:12 PM
Adding and Subtracting Rational Expressions.notebook
13
February 20, 2012
Mar 251:16 PM Mar 251:23 PM
Mar 251:28 PM