For f(x)=x^2+5 and g(x)=x^2-9
Find these functions:
1. (f o g)(x)
2. (g o f)(x)
3. ( f o g)(4)
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1. (f o g)(x)=(x^2-9)^2+5
2. (g o f)(x)=(x^2+5)^2-9
3. ( f o g)(4)=(4^2-9)^2+5=49+5=54
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