document.write( "Question 263737: Please help me solve this equation: $\"+3%2Ax%5E-4-21%2Ax%5E-2%2B3=0+\"$ \n" ); document.write( "

Algebra.Com's Answer #194356 by mananth(16946) $\"\"$ $\"About$

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Please help me solve this equation: $\"+3%2Ax%5E-4-21%2Ax%5E-2%2B3=0+\"$ \r
\n" ); document.write( "\n" ); document.write( "3*x^-4-21*x^-2+3=0 multiply this equation by x^4\r
\n" ); document.write( "\n" ); document.write( "3_21x^2+3x^4=0\r
\n" ); document.write( "\n" ); document.write( "3x^4-21x^2+3=0 common factor 3\r
\n" ); document.write( "\n" ); document.write( "x^4-7x^2+1=0\r
\n" ); document.write( "\n" ); document.write( "x^2(x^2-7)+ 1 =0 Divide by x^2\r
\n" ); document.write( "\n" ); document.write( "x^2-7 +1/x^2=0\r
\n" ); document.write( "\n" ); document.write( "x^2+1/x^2-7=0
\n" ); document.write( "x^2+2+1/x^2-9=0\r
\n" ); document.write( "\n" ); document.write( "(x+1/x)^2-9=0\r
\n" ); document.write( "\n" ); document.write( "(x+(1/x)+3)(x+(1/x)-3)=0\r
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