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Find f∘gf \circ g f(x)=x+2g(x)=5x2−4f ( x ) = x + 2 \quad g ( x ) = \frac { 5 } { x ^ { 2 } - 4 }

Question 109

Multiple Choice

Find f∘gf \circ g .
f(x) =x+2g(x) =5x2−4f ( x ) = x + 2 \quad g ( x ) = \frac { 5 } { x ^ { 2 } - 4 }


A) (f∘g) (x) =5x2( f \circ g ) ( x ) = \frac { 5 } { x ^ { 2 } }
B) (f∘g) (x) =5x2+4x( f \circ g ) ( x ) = \frac { 5 } { x ^ { 2 } + 4 x }
C) (f∘g) (x) =2x2+3x2−4( f \circ g ) ( x ) = \frac { 2 x ^ { 2 } + 3 } { x ^ { 2 } - 4 }
D) (f∘g) (x) =7x2−4( f \circ g ) ( x ) = \frac { 7 } { x ^ { 2 } - 4 }
E) (f∘g) (x) =2x2−3x2−4( f \circ g ) ( x ) = \frac { 2 x ^ { 2 } - 3 } { x ^ { 2 } - 4 }

Correct Answer:

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