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College Algebra
Answer/Discussion to Practice Problems  
Tutorial 36:Long Division




 

checkAnswer/Discussion to 1a

problem 1a


 

 
ad1a1
*Write in descending order

 
 

 
Note that the "scratch work" that you see at the right of the long division shows you how that step is filled in.  It shows you the "behind the scenes" of how each part comes about. 

 
ad1a3
Scratch work:
ad1a2

 

 
ad1a5
Scratch work:
ad1a4

 
 

 
ad1a7
Scratch work:
ad1a6

 
 

 
We keep going until we can not divide anymore. 

We just follow the the same steps 2 - 4 as shown above.  Our "new dividend" is always going to be the last line that was found in step 4.


 

AND


 

AND


 

 
The following is the scratch work (or behind the scenes if you will) for the rest of the problem.  You can see everything put together following the scratch work under "putting it all together".  This is just to show you how the different pieces came about in the final answer.  When you work a problem like this, you don't necessarily have to write it out like this.  You can have it look like the final product shown after this scratch work.

 
Scratch work for steps 2, 3, and 4
for the last two terms of the quotient

2nd term:
ad1a8

ad1a10

ad1a11
 

3rd term:
ad1a9

ad1a12

ad1a13


 
Putting it all together:

Note that each second line is SUBTRACTED, so the line shows what the signs of each term would be when you subtract it. 
 

ad1a14


 
 

 
ad1a15
*Quotient with a remainder of -32

 


 

checkAnswer/Discussion to 1b

problem 1b


 

 
ad1b1
*Write in descending order
*Insert 0's for missing terms

 
 

 
Note that the "scratch work" that you see at the right of the long division shows you how that step is filled in.  It shows you the "behind the scenes" of how each part comes about. 

 
ad1b3
Scratch work:
ad1b2

 

 
ad1b5
Scratch work:
ad1b4

 
 

 
ad1b7
Scratch work:
ad1b6

 
 

 
We keep going until we can not divide anymore. 

We just follow the the same steps 2 - 4 as shown above.  Our "new dividend" is always going to be the last line that was found in step 4.


 

AND


 

AND


 

 
The following is the scratch work (or behind the scenes if you will) for the rest of the problem.  You can see everything put together following the scratch work under "putting it all together".  This is just to show you how the different pieces came about in the final answer.  When you work a problem like this, you don't necessarily have to write it out like this.  You can have it look like the final product shown after this scratch work.

 
Scratch work for steps 2, 3, and 4
for the last three terms of the quotient

2nd term:
ad1b8

ad1b11

ad1b12
 

3rd term:
ad1b9

ad1b13

ad1b14
 

4th term:
ad1b10

ad1b15

ad1b16


 
Putting it all together:

Note that each second line is SUBTRACTED, so the line shows what the signs of each term would be when you subtract it. 
 

ad1b17


 
 

 
ad1b18
*Quotient with no remainder

 

 

Buffalo top

 


Last revised on March 15, 2010 by Kim Seward.
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