document.write( "Question 322675: Factor, if possible
\n" ); document.write( "t^6 - 18t^3 + 81 \n" ); document.write( "

Algebra.Com's Answer #231012 by Fombitz(32388) $\"\"$ $\"About$

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Substitute.
\n" ); document.write( "Let $\"u=t%5E3\"$ , $\"u%5E2=t%5E6\"$
\n" ); document.write( " $\"t%5E6+-+18t%5E3+%2B+81=u%5E2+-+18u+%2B+81\"$
\n" ); document.write( " $\"t%5E6+-+18t%5E3+%2B+81=%28u-9%29%5E2\"$
\n" ); document.write( " $\"t%5E6+-+18t%5E3+%2B+81=%28t%5E3-9%29%5E2\"$ \n" ); document.write( "

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