Question 650820
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Hi,
{{{8x^6+4x^4-50x^2-25=0}}}
Factor by Grouping
{{{ 4x^4( 2x^2 + 1) - 25(2x^2 + 1) = 0}}}
 (4x^2 - 25)(2x^2 + 1) = 0
   x = ± 5/2  Or  x = ± {{{i/sqrt(2)}}} = ± {{{i*sqrt(2)/2}}}