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Help 4 

 Feb 27, 2018
 #1
avatar+99397 
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x^3 - x^2 + x - 1  factors as

 

x^2 (x -1) + 1(x - 1)  =

 

(x - 1)(x^2 + 1)

 

 

x^2  - 1   factors as

 

(x + 1) ( x - 1)

 

Taking all the different factors we have

 

(x - 1)  (x + 1) (x^2 + 1)   ⇒  second answer

 

 

 

 

  7                     7

____    +       ______

a + 8              a^2  - 64

 

 

  7                       7

_____   +     __________

 a + 8           (a + 8) (a - 8)

 

 

    7(a - 8)                         7

__________     +         _________

(a + 8) (a - 8)              (a + 8) (a - 8)

 

 

[ 7a - 56  + 7 ]

____________

(a + 8) (a - 8)

 

 

[ 7a - 49 ]

___________

(a + 8) (a - 8)

 

 

cool cool cool

 Feb 27, 2018

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