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If f(x)=square root x and g(x)=x^3-9, find the compositions f o g, g o f, f o f, and g o g.
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If f(x)=square root x and g(x)=x^3-9, find the compositions f o g, g o f, f o f, and g o g.

User Victor Savkin
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f o g = sqrt(x^3 - 9)
g o f = (sqrtx)^3 - 9
f o f = sqrt (sqrt x) or x^(1/4)
g o g = (x^3 - 9)^3 - 9
User Skyfish
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