document.write( "Question 119941: The orignal equation started like this:
\n" ); document.write( " $\"x%5E4%2B18=11x%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( "Eventually i simplified it to this
\n" ); document.write( " $\"%28x%2B3%29%28x-3%29%28x%5E2-2%29\"$ \r
\n" ); document.write( "\n" ); document.write( "So would my answer just be -3 and 3? What do i do with the $\"x%5E2-2\"$ since its unfactorable? \n" ); document.write( "

Algebra.Com's Answer #87889 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
x^4+18=11x^2
\n" ); document.write( "x^4 - 11x^2 + 18 = 0
\n" ); document.write( "Factor to get:
\n" ); document.write( "(x^2-9)(x^2-2)=0
\n" ); document.write( "x^2-9 = 0 or x^2-2 = 0
\n" ); document.write( "(x-3)(x+3)= 0 or (x-sqrt2)(x+sqrt2)=0
\n" ); document.write( "x = 3 or x=-3 or x=sqrt2 or x=-sqrt2
\n" ); document.write( "======================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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