document.write( "Question 64795: Please help me: Solve by factoring:x^4-9x^2=0. \n" ); document.write( "

Algebra.Com's Answer #45308 by 303795(602) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E4-9x%5E2=0\"$
\n" ); document.write( "Remove common factor of $\"x%5E2\"$
\n" ); document.write( " $\"x%5E2%28x%5E2-9%29=0\"$
\n" ); document.write( "Difference of squares
\n" ); document.write( " $\"x%5E2%28x-3%29%28x%2B3%29=0\"$
\n" ); document.write( "ie x=0 or x-3 or x=-3 \n" ); document.write( "

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