Resposta :
[tex] {x}^{2} + 4x + {2x}^{2} ({x}^{2} + 2x) + 12[/tex]
[tex] {x}^{2} + 4x + {2x}^{4} + {2x}^{3} + 12[/tex]
[tex] {2x}^{4} + {2x}^{3} + {x}^{2} + 4x + 12[/tex]
[tex] {x}^{2} + 4x + {2x}^{2} ({x}^{2} + 2x) + 12[/tex]
[tex] {x}^{2} + 4x + {2x}^{4} + {2x}^{3} + 12[/tex]
[tex] {2x}^{4} + {2x}^{3} + {x}^{2} + 4x + 12[/tex]