Question

If F(x)=2x^2+3, then which of the following represent f(x+1). A.2x^2+2. B. X^2+3. C. 2x^2+4x+1. D. 2x^2+4x+5

Answer 1

Hi,
If it is f(x)=2x²+3 and not F(x)=2x²+3 then 
Answer D.

$f(x)=2x^2+3\\ f(x+1)=2(x+1)^2+3\\ =2(x^2+2x+1)+3\\ =2x^2+4x+5$