document.write( "Question 888296: How do you factor out 9x^4 - 10x^2 + 1?
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Algebra.Com's Answer #537245 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( " $\"9x%5E4+-+10x%5E2+%2B+1\"$ ....write $\"-10x%5E2\"$ as $\"-9x%5E2-x%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"9x%5E4+-9x%5E2-x%5E2%2B+1\"$ ....group\r
\n" ); document.write( "\n" ); document.write( " $\"%289x%5E4+-9x%5E2%29-%28x%5E2-+1%29\"$ ...factor out $\"%289x%5E2%29\"$ from the first group\r
\n" ); document.write( "\n" ); document.write( " $\"9x%5E2%28x%5E2+-1%29-+%28x%5E2-+1%29\"$ ...factor out $\"%28x%5E2-+1%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"%289x%5E2-1%29%28x%5E2-1%29\"$ ...factor $\"%289x%5E2-+1%29\"$ : since $\"%289x%5E2-+1%29\"$ = $\"%28%283x%29%5E2-+1%29\"$ , we have\r
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\n" ); document.write( "\n" ); document.write( " $\"%283x-1%29+%283x%2B1%29+%28x-1%29+%28x%2B1%29\"$ \n" ); document.write( "

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