document.write( "Question 344060: Solve the equation x^4-2⁢x^2-15=0 \n" ); document.write( "

Algebra.Com's Answer #246145 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E4-2x%5E2-15=0\"$
\n" ); document.write( " $\"%28x%5E2%2B3%29%28x%5E2-5%29=0\"$
\n" ); document.write( "Two solutions:
\n" ); document.write( " $\"x%5E2%2B3=0\"$
\n" ); document.write( " $\"x%5E2=-3\"$
\n" ); document.write( " $\"highlight%28x=0+%2B-+sqrt%283%29i%29\"$ where $\"i=sqrt%28-1%29\"$
\n" ); document.write( ".
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\n" ); document.write( " $\"x%5E2-5=0\"$
\n" ); document.write( " $\"x%5E2=5\"$
\n" ); document.write( " $\"highlight%28x=0+%2B-+sqrt%285%29%29\"$
\n" ); document.write( " \n" ); document.write( "

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