If F(x)= x^3-3 and g(x) = x + 3, what is f(g(x))? A: x^3+9x^2+27x+27 B: x^2+6x+6 C:x^3+9x^2+27x^2+24 D:x^3+24

asked Sep 2, 2015 52.5k views

1 vote

If F(x)= x^3-3 and g(x) = x + 3, what is f(g(x))?

A: x^3+9x^2+27x+27
B: x^2+6x+6
C:x^3+9x^2+27x^2+24
D:x^3+24

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5 votes

$f(g(x))=(x+3)^3-3\\ f(g(x))=x^3+9x^2+27x+27-3\\ f(g(x))=x^3+9x^2+27x+24$

Cdarlint answered Sep 7, 2015

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