SOLUTION: 1+ 2/x+ 4/x2+ 8/x3 ___________ ______ 1- 16/x4

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Question 103185: 1+ 2/x+ 4/x2+ 8/x3
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1- 16/x4

Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
1.
Multiply top and bottom by


Let's look at the denominator first.


Now the numerator

Let's substitute



Good idea to check the answer
Let's try x=3
Equation 1 gives an answer
1.Numerator=
1.Denominator=
Numerator = 2.470407
Denominator = 0.802469
Numerator/Denominator = 3


3=3
Good answer.

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