Answer
2, $\sqrt[3] 17$
Work Step by Step
We are given the function $g(x)=\sqrt[3] (x-3)$.
$g(11)=\sqrt[3] (11-3)=\sqrt[3] 8=2$
We know this because $2^{3}=8$.
$g(20)=\sqrt[3] (20-3)=\sqrt[3] 17$
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