8(1-x^3)/(1-x)

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Solution for 8(1-x^3)/(1-x) equation: 


D( x )

1-x = 0

1-x = 0

1-x = 0

1-x = 0 // - 1

-x = -1 // * -1

x = 1

x in (-oo:1) U (1:+oo)

(8*(1-x^3))/(1-x) = 0

( 1-x^3 )

-1*x^3 = -1 // : -1

x^3 = 1

x^3 = 1 // ^ 1/3

x = 1

( 8 )

8 = 0

x belongs to the empty set

x in { 1} 

x belongs to the empty set

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