Answer
$\color{blue}{3(z-4)^2(3z-11)}$
Work Step by Step
Factor out the GCF $3(z-4)^2$ to obtain:
$=3(z-4)^2[1+3(z-4)]$
Distribute $3$ then combine like terms to obtain:
$\\=3(z-4)^2(1+3z-12)
\\=\color{blue}{3(z-4)^2(3z-11)}$
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