SOLUTION: The problem states to rationalize the denominator. The sqrt of 2 - 4/z^2 + 2/z^4 I came up with (z^2 - 1) * sqrt of 2 over z^2 Any help would be greatly appreciated. Tha

Question 130461This question is from textbook Introductory Algebra
: The problem states to rationalize the denominator.
The sqrt of 2 - 4/z^2 + 2/z^4
I came up with (z^2 - 1) * sqrt of 2 over z^2
Any help would be greatly appreciated. Thanks! This question is from textbook Introductory Algebra

Answer by Edwin McCravy(20054) (Show Source): You can put this solution on YOUR website!
The problem states to rationalize the denominator.

I came up with
Any help would be greatly appreciated. Thanks!



Let's see:














 






Your answer is equivalent to mine, except for the 
absolute value bars.  The absolute value bars
are technically necessary because  is
negative when z < 1, yet by agreement no radical 
square root can ever be negative.

However your teacher may just ignore this fact
and accept your answer as you have it without the 
absolute value bars.

Edwin

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