Question

Given that f(x)=x-1 and g(x)=x^2-4, evaluate gog at x=2

Answer 1

\[g(2)=2^2-4=0\]
\[g(g(2))=f(0)=0^2-4=-4\]

Answer 2

last line should have read
\[g(g(2))=g(0)=0^2-4=-4\]

Answer 3

Thanks so much!