Someone PLEASE help!

asked Jul 7, 2021 31.9k views

4 votes

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5 votes

Explanation:

$f(f(x)) = f( {x}^(2) + 4)$

$= {( {x}^(2) + 4) }^(2) + 4$

$= {x}^(4) + 4 {x}^(2) + 16 + 4$

$= {x}^(4) + 8 {x}^(2) + 20$

Marcel Derks answered Jul 14, 2021

5.7k points

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