document.write( "Question 872287: Find the solution set for x^4 - 12x^2 + 32 = 0\r
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document.write( "Can you please help me out? Thanks so much in advance:) \n" );
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Algebra.Com's Answer #526084 by josgarithmetic(39630) ![]() You can put this solution on YOUR website! Try a substitution, like u=x^2, and then solve for u. You next must solve for x from reversing the substitution. You may find four different solutions.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "u=4 OR u=8.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "x=-2 or x=2;\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "x=-sqrt(2*2*2)=-2*sqrt(2) \n" ); document.write( "or \n" ); document.write( "x=2*sqrt(2)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "SUMMARY OF SOLUTION \n" ); document.write( "----------------------------------------------- \n" ); document.write( " \n" ); document.write( "----------------------------------------------- \n" ); document.write( " |