Respuesta:
[tex]x=2,\:x=-2,\:x=2i,\:x=-2i[/tex]
Explicación paso a paso:
[tex]3x^4-8=40\\\\3x^4-8+8=40+8\\\\3x^4=48\\\\\frac{3x^4}{3}=\frac{48}{3}\\\\x^4=16\\\\u^2=16\\\\u=\sqrt{16},\:u=-\sqrt{16}\\\\\\x=2,\:x=-2,\:x=2i,\:x=-2i[/tex]
2
[tex]3 {x}^{4} - 8 = 40 \\ {3x}^{4} = 48 \: \: ( \div 3) \\ {x}^{4} = 16 \\ x = \sqrt[4]{16} \\ x = 2[/tex]
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Respuesta:
[tex]x=2,\:x=-2,\:x=2i,\:x=-2i[/tex]
Explicación paso a paso:
[tex]3x^4-8=40\\\\3x^4-8+8=40+8\\\\3x^4=48\\\\\frac{3x^4}{3}=\frac{48}{3}\\\\x^4=16\\\\u^2=16\\\\u=\sqrt{16},\:u=-\sqrt{16}\\\\\\x=2,\:x=-2,\:x=2i,\:x=-2i[/tex]
Respuesta:
2
Explicación paso a paso:
[tex]3 {x}^{4} - 8 = 40 \\ {3x}^{4} = 48 \: \: ( \div 3) \\ {x}^{4} = 16 \\ x = \sqrt[4]{16} \\ x = 2[/tex]