f(x)= (2xkuadrat+3)kuadrat

[tex]f(x) = ( { {2x}^{2} + 3) }^{2} \\ = ( {2x}^{2} + 3)( {2 {x}^{2} } + 3)\\ = 4 {x}^{4} + 6 {x}^{2} + 6 {x}^{2} + 9 \\ = 4 {x}^{4} + 12{x}^{2} + 9[/tex]