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 #199148 by oberobic(2304) $\"\"$ $\"About$

You can put this solution on YOUR website!
I assume the problem is to solve:
\n" ); document.write( " $\"3x%5E4+%2B15x%5E2+-72+=+0\"$
\n" ); document.write( ".
\n" ); document.write( "Factoring, we arrive at:
\n" ); document.write( " $\"%283x%5E2+-+24%29%28x%5E2+%2B+3%29+=+0\"$
\n" ); document.write( ".
\n" ); document.write( "Real solutions will be found where
\n" ); document.write( " $\"%283x%5E2+-24%29+=+0\"$
\n" ); document.write( "or
\n" ); document.write( " $\"%28x%5E2+%2B3+%29+=+0\"$
\n" ); document.write( ".
\n" ); document.write( " $\"3x%5E2+-+24+=+0\"$
\n" ); document.write( " $\"3x%5E2+=+24\"$
\n" ); document.write( " $\"x%5E2+=+8\"$
\n" ); document.write( " $\"x+=+sqrt%288%29+=+2%2Asqrt%282%29\"$
\n" ); document.write( "or
\n" ); document.write( " $\"x+=+-sqrt%288%29+=+-2%2Asqrt%282%29\"$ \r
\n" ); document.write( "\n" ); document.write( ".
\n" ); document.write( " $\"x%5E2+%2B+3+=+0\"$
\n" ); document.write( " $\"x%5E2+=+-3\"$
\n" ); document.write( "There are no real solutions for this part. \n" ); document.write( "

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