Question

If $f(x) = 2x + 1$ and $g (x) = x^2 + 1$ then $go(fof)(2) =$

• A. 112
• B. 122
• C. 12
• D. 124

Answer 1

Answer: (B)

122

Answer 2

$g(f(f(2)))=g(f(5))=g(11)=1 21+1= 122$