document.write( "Question 299911: x^4-33x^2-108=0 \n" ); document.write( "

Algebra.Com's Answer #215321 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
x^4-33x^2-108=0
\n" ); document.write( "---
\n" ); document.write( "x^4 -36x^2+3x^2-108 = 0
\n" ); document.write( "x^2(x^2-36) + 3(x^2-36) = 0
\n" ); document.write( "(x^2-36)(x^2+3) = 0
\n" ); document.write( "(x-6)(x+6)(x-isqrt(3))(x+isqrt(3)) = 0
\n" ); document.write( "x = 6 or x = -6 or x = isqrt(3) or x = -isqrt(3)
\n" ); document.write( "=================================================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "================================================= \n" ); document.write( "

\n" );