Find the Requested Composition of Functions $f ( x ) = x ^ { 2 } + 8$

question 59

Multiple Choice

Find the requested composition of functions.
-Given $f ( x ) = x ^ { 2 } + 8$ and $g ( x ) = x ^ { 2 } - 8$ , find $f g ( x )$ .

• A) \(x ^ { 4 } - 16 x ^ { 2 } + 72\)
• B) \(x ^ { 4 } + 16 x ^ { 2 } + 72\)
• C) \(x ^ { 4 } + 16 x ^ { 2 } + 56\)
• D) \(x ^ { 4 } - 16 x ^ { 2 } + 56\)

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