If f(x)=x+4 and g(x)=x^2-1, what is g(f(x))?
1 answer:
g(f(x)) means plug in f(x) for every "x" in g(x).
g(f(x))=(x+4)^2-1=x^2+8x+16-1=x^2+8x+15
answer: x^2+8x+15
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