Answer
$2, \sqrt[3] {17}$
Work Step by Step
Substitute 11 and 20 into the function:
$g(11)=\sqrt[3] {x-3}=\sqrt[3] {11-3}=\sqrt[3] {8}=\sqrt[3] {2^{3}}=2$
$g(20)=\sqrt[3] {20-3}=\sqrt[3] {17}$.
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