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Textbook Expert
Textbook ExpertVerified Tutor
21 Dec 2021

Given information

Given

 

Step-by-step explanation

Step 1.
Let us find the values of and :
We multiplied both numerator and denominator by   .
 
                                                   We multiplied.     
   
 
               We need to get rid of  b-4  because
 
                                                   We need to simplify the fraction by   Therefore,
 
         
                                                  If    when   then   
                                                  We used the rule above to simplify.
                                                  We substituted 0 for   .
 
   
 
 
 
 

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