f(x)=2x²+1 what is f(x) when x=3?
f(x)=2x^2+1f(3)=2(3)^2+1f(3)=2(9)+1f(3)=18+1f(3)=19
\(f(x) = 2x^2 +1 \\\\f(3) = 2(3)^2 + 1\\\\f(3) = 2(9) + 1\\\\f(3) = 18 + 1\\\\\boxed{\bf{f(3)=19}}\)
