+0  
 
0
104
1
avatar+558 

What are the solutions to the equation?

SamJones  Jan 17, 2018
 #1
avatar+86935 
+1

x^3 - 8x^2  - x  +  8  =  0       factor by grouping

 

x^2  (x  -  8)  -  1(x - 8)  =  0             ( x - 8 )  is the common factor

 

(x - 8)  (x^2  - 1)  =  0

 

(x - 8)  ( x + 1) ( x - 1)  =    0

 

Change the signs on the integers inside the parentheses  to get the solutions  of :

 

8 ,  -1,  1

 

 

cool cool cool

CPhill  Jan 17, 2018

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