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Find all real values of n  that (n^2 - 82)^2 = 324.

 Apr 2, 2020
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(n^2 - 82)^2 = 324.     sqrt both sides

n^2-82  =  +- 18                 so     n^2 = 100           or n^2 =  64

 

                                                   n = +- 10   or  +- 8 

 Apr 2, 2020

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