Math 4

1.

 

Please post a 100-250 word response to the following discussion question by clicking on Reply.  Your response is due by Tuesday.

 

When is a rational expression undefined?  Describe how to find the values at which a rational expression is undefined. 

 

Provide an example of a rational expression for your classmates.  Ask them to identify where the rational expression is undefined.

 

 

2. show work

                           2/(10-x)

What would the value of x need to be in order for the expression to be deemed undefined?

 

3. show work

 

x^2+5  
 x+2

 

4.

 

Please post a 100-250 word response to the following discussion question by clicking on Reply.  Your response is due by Thursday.

 

What are the five steps in solving a rational equation?  Why is the last step of solving a rational equation important?  Provide a rational equation for your classmates to solve.

 

 

5. show work

 

10    +   4   =  5   

 x(x-2)      x     x-2

 

6. show work.

X-3/x^4-10x