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Multiple choice

The imaginary roots of the equation ${ ({ x }^{ 2 }+2) }^{ 2 }+8{ x }^{ 2 }=6x({ x }^{ 2 }+2)$ are ____________.

  1. $1+i$
  2. $2\pm i$
  3. $-1\pm i$
  4. $none of these$
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