Find $g \circ f$ .
$f ( x ) = x ^ { 2 } , g ( x ) = x - 4$

A) $x ^ { 2 } - 4$
B) $x ^ { 2 }$
C) $( x - 4 ) ^ { 2 }$
D) $\left( x ^ { 2 } + 4 \right)$
E) $( x + 4 ) ^ { 2 }$

Name: Find $g \circ f$ . $f ( x ) = x ^ { 2 } , g ( x ) = x - 4$ A) $x ^ { 2 } - 4$ B) $x ^ { 2 }$ C) $( x - 4 ) ^ { 2 }$ D) $\left( x ^ { 2 } + 4 \right)$ E) $( x + 4 ) ^ { 2 }$
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Question

Find $g \circ f$ . 
$f ( x ) = x ^ { 2 } , g ( x ) = x - 4$

A) $x ^ { 2 } - 4$
B) $x ^ { 2 }$
C) $( x - 4 ) ^ { 2 }$
D) $\left( x ^ { 2 } + 4 \right)$
E) $( x + 4 ) ^ { 2 }$

Quizplus · Accepted Answer

To find $g \circ f$, you first apply $f$, then $g$. Applying $f(x) = x^2$ first, then $g(x) = x - 4$ to the result, gives $g(f(x)) = (x^2) - 4$.

Find g∘fg \circ fg∘f f(x)=x2,g(x)=x−4f ( x ) = x ^ { 2 } , g ( x ) = x - 4f(x)=x2,g(x)=x−4

Find $g \circ f$ $f ( x ) = x ^ { 2 } , g ( x ) = x - 4$