Respuesta:
[tex]l = 12 {x}^{4} [/tex]
Explicación paso a paso:
[tex]l = {(3 {x}^{4} + 2)}^{2} - 9 {x}^{8} - 4[/tex]
[tex]l = 9 {x}^{8} + 12 {x}^{4} + 4 - 9 {x}^{8} - 4[/tex]
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Verified answer
Respuesta:
[tex]l = 12 {x}^{4} [/tex]
Explicación paso a paso:
[tex]l = {(3 {x}^{4} + 2)}^{2} - 9 {x}^{8} - 4[/tex]
[tex]l = 9 {x}^{8} + 12 {x}^{4} + 4 - 9 {x}^{8} - 4[/tex]
[tex]l = 12 {x}^{4} [/tex]