document.write( "Question 361245: Find all the real roots of equation x^4 + 2x^2 − 24 = 0.
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #257646 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


\n" );
document.write( "Hi
\n" );
document.write( "x^4 + 2x^2 − 24 = 0.
\n" );
document.write( "Find all the real roots of equation
\n" );
document.write( "completing the square
\n" );
document.write( "(x^4 + 2x^2 + 1) - 1 − 24 = 0.
\n" );
document.write( "(x^2 +1)^2 -25 = 0
\n" );
document.write( "(x^2 +1)^2  = 25
\n" );
document.write( "x^2 +1 = 5
\n" );
document.write( "x^2 = 4
\n" );
document.write( "x = 2
\n" );
document.write( "x = -2 \n" );
document.write( "

\n" );