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) ![]() You can put this solution on YOUR website! What are the complex roots of f(x)=x^4+x^2+4 and how do you find them? \n" ); document.write( "---- \n" ); document.write( "Use the Quadratic Formula: \n" ); document.write( "x^2 = [-1 +- sqrt(1 -4*4)]/2 \n" ); document.write( "--- \n" ); document.write( "x^2 = [-1 +- sqrt(-15)]/2 \n" ); document.write( "--- \n" ); document.write( "x^2 = [-1+ i*sqrt(15)]/2 or x^2 = [-1-isqrt(15)]/2 \n" ); document.write( "---- \n" ); document.write( "x = sqrt of each of the above. \r \n" ); document.write( "\n" ); document.write( "=================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============== \n" ); document.write( " |