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is (x^8 - 6561) a perfect square?

Guest Mar 1, 2017
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 #1
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I think you may mean " a difference of two squares"

 

(x^8 - 6561) =

 

(x^8 - 3^8)  =

 

( x^4 - 3^4) ( x^4 + 3^4)  =

 

[ (x^2)^2  - (3^2)^2 ]  [ (x^2)^2 + (3^2)^2 ]

 

So....it is a difference of  two squares

 

 

cool cool cool

CPhill  Mar 1, 2017
 #2
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thank you

Guest Mar 1, 2017
 #3
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thank you

Guest Mar 1, 2017

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