Question

F( 1 )=x2 x +4
F ( 3 ) = x2 + 1
Qm sabe??

Answer 1

$\large\sf{}\red{f(x) = {x}^{2} + 4}$

$\large\sf{} \blue{f(1) = {1}^{2} + 4 } \\ \large\sf{}f(1) = 1 + 4 = 5$

$\large\sf{} \orange{f(3) = {3}^{2} + 1 } \\ \large\sf{}f(3) = 9 + 1 = 10$

${\large\boxed{\boxed{  { \large \sf Bons~Estudos }}}}$