document.write( "Question 121823: May I have some help with the following equation?\r
\n" ); document.write( "\n" ); document.write( "Find all real solutions of the equation.\r
\n" ); document.write( "\n" ); document.write( "x^8 + 15x^4=16
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Algebra.Com's Answer #89433 by checkley71(8403)\"\" \"About 
You can put this solution on YOUR website!
X^8+15X^4-16=0
\n" ); document.write( "(X^4+16)(X^4-1)=0
\n" ); document.write( "(X^4+16)(X^2+1)(X^2-1)=0
\n" ); document.write( "(X^4+16)(X^2+1)(X+1)(X-1)=0
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