# Chapter 6 - Section 6.5 - Factoring by Special Products - Exercise Set - Page 448: 59

(z-1)($z^{2}$+z+$1^{2}$)

#### Work Step by Step

$z^{3}$-1=$z^{3}$-$1^{3}$=(z-1)($z^{2}$+z1+$1^{2}$) (z-1)($z^{2}$+z+$1^{2}$)

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