Answer:
Answer is (5-x) ^2-3
Step-by-step explanation:
[tex]given \: f(x) = {x}^{2} - 3 \: and \: g(x) = 5 - x \\( fog)(x) = f(g(x)) \\ = f(5 - x) \\ = {(5 - x)}^{2} - 3[/tex]
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