42510011 0010 1010 1101 0001 0100 1011

Rational ExpressionsAdding

Subtracting

4251

0011 0010 1010 1101 0001 0100 1011

Finding the Least Common Denominator (LCD)

Step 1

Factor the denominators. Write any repeating factors in exponential form.

Step 2

List different factors. If common factors, list the common factor with the highest exponent.

Step 3

The LCD is the product from step 2.

4251

0011 0010 1010 1101 0001 0100 1011

Finding the Least Common Denominator (LCD)

http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg2/player.html?contentSrc=8124/8124.xml

4251

0011 0010 1010 1101 0001 0100 1011

Adding Rational Expressions

Step 1

Find the LCD (Least Common Denominator)

Step 2

Rename each term using the LCD

Step 3

Add numerators

(Keep the Denominator)

Step 4

Make sure the answer is in lowest terms

4251

0011 0010 1010 1101 0001 0100 1011

Adding Rational Expressions

http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-640s.html

4251

0011 0010 1010 1101 0001 0100 1011

Subtracting Rational Expressions

Step 1

Find the LCD (Least Common Denominator)

Step 2

Rename each term using the LCD

Step 3

Subtract numerators

(Keep the Denominator)

Step 4

Make sure the answer is in lowest terms

4251

0011 0010 1010 1101 0001 0100 1011

Subtracting Rational Expressions

http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-641s.html