document.write( "Question 320157: 2t^-4-5t^-2+2=0 \n" ); document.write( "

Algebra.Com's Answer #229313 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"v=t%5E%28-2%29\"$ , then $\"v%5E2=t%5E%28-4%29\"$ ,
\n" ); document.write( " $\"2t%5E-4-5t%5E-2%2B2=2v%5E2-5v%2B2=0\"$
\n" ); document.write( " $\"2t%5E-4-5t%5E-2%2B2=%282v-1%29%28v-2%29=0\"$
\n" ); document.write( "Two solutions:
\n" ); document.write( " $\"2v-1=0\"$
\n" ); document.write( " $\"2v=1\"$
\n" ); document.write( " $\"v=1%2F2\"$
\n" ); document.write( " $\"1%2Ft%5E2=1%2F2\"$
\n" ); document.write( " $\"highlight%28t=sqrt%282%29%29\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"v-2=0\"$
\n" ); document.write( " $\"v=2\"$
\n" ); document.write( " $\"1%2Ft%5E2=2\"$
\n" ); document.write( " $\"t%5E2=1%2F2\"$
\n" ); document.write( " $\"highlight%28+t=sqrt%282%29%2F2%29\"$
\n" ); document.write( " \n" ); document.write( "

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