Find the domain of this function: $$f(x)=\sqrt[2]{-4 - 5 x}$$ (which reads the 2th root of $-4 - 5 x$ ).
The function is defined on the interval from to .
Use INF for infinity or -INF for minus infinity.

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Now find the domain of this function: $$f(x)= \sqrt[3]{-4 - 5 x}$$ (which reads the 3th root of $-4 - 5 x$ ).
The function is defined on the interval from to .