Friday, December 12, 2008

OPERATIONS ON RATIONAL EXPRESSIONS

In today's class Mr. K was not here and he had a sub to fill in for him. So we just continued working on Exercise 47 all question(DO NOT DO #9)

Here's an example:

eq=\frac{x}{y}\div\frac{x}{y}


1. You can't factor yet so you have to reciprocal.

eq=\frac{x}{y}\div\frac{y}{x}


2. Now factor out the variables.



3.Now just cross multiply; x and x = 1 and y and y = 1


eq=\frac{x}{y}\div\frac{y}{x} \frac{1}{1} =1

4. now just reduce




The next scribe will be ...........................Akeem!!!



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