document.write( "Question 506753: What are the complex roots of f(x)=x^4+x^2+4 and how do you find them? \n" ); document.write( "
Algebra.Com's Answer #340241 by stanbon(75887)\"\" \"About 
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What are the complex roots of f(x)=x^4+x^2+4 and how do you find them?
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\n" ); document.write( "Use the Quadratic Formula:
\n" ); document.write( "x^2 = [-1 +- sqrt(1 -4*4)]/2
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\n" ); document.write( "x^2 = [-1 +- sqrt(-15)]/2
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\n" ); document.write( "x^2 = [-1+ i*sqrt(15)]/2 or x^2 = [-1-isqrt(15)]/2
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\n" ); document.write( "x = sqrt of each of the above. \r
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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