document.write( "Question 708364: Fine the real or imaginary solutions of each equation by factoring
\n" ); document.write( " $\"X%5E4-8x%5E2=-16\"$
\n" ); document.write( "Can you also explain how to get this? I don't understand this lesson. \n" ); document.write( "

Algebra.Com's Answer #436117 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"X%5E4+-+8x%5E2+=+-16\"$
\n" ); document.write( "Add 16 to both sides
\n" ); document.write( "x^4 - 8x^2 + 16 = 0
\n" ); document.write( "Can be factored to
\n" ); document.write( "(x^2 - 4)(x^2 - 4) = 0
\n" ); document.write( "then we have
\n" ); document.write( "x^2 = 4
\n" ); document.write( "x = +/- $\"sqrt%284%29\"$
\n" ); document.write( "two solutions
\n" ); document.write( "x = +2
\n" ); document.write( "x = -2
\n" ); document.write( ":
\n" ); document.write( "Graphically
\n" ); document.write( " $\"+graph%28+300%2C+200%2C+-6%2C+6%2C+-10%2C+20%2C+x%5E4+-+8x%5E2+%2B+16%29+\"$ \n" ); document.write( "

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