document.write( "Question 272153: find the real number solutions for the equation
\n" ); document.write( " 3x^4+15^2-72=0 \n" ); document.write( "

Algebra.Com's Answer #199143 by Alan3354(69443) $\"\"$ $\"About$

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3x^4+15^2-72=0
\n" ); document.write( " $\"x%5E4+%2B+5x%5E2+-+24+=+0\"$
\n" ); document.write( " $\"%28x%5E2+%2B+8%29%2A%28x%5E2+-+3%29+=+0\"$
\n" ); document.write( "x^2 = - 8
\n" ); document.write( "x = ą 2*i*sqrt(2) (complex numbers)
\n" ); document.write( "----------------
\n" ); document.write( "x^2 = 3
\n" ); document.write( "x = ą sqrt(3) (real numbers)
\n" ); document.write( " \n" ); document.write( "

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