document.write( "Question 64794This question is from textbook algebra and trigonometry
\n" ); document.write( ": Please help: Simplify -i^4 \n" ); document.write( "

Algebra.Com's Answer #45309 by 303795(602) $\"\"$ $\"About$

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$\"i=sqrt%28-1%29\"$
\n" ); document.write( "so
\n" ); document.write( " $\"-i%5E4=-%28sqrt%28-1%29%29%5E4\"$ (Making the assumption that there are no brackets around the -i)
\n" ); document.write( " $\"-%28sqrt%28-1%29%5E2%2Asqrt%28-1%29%5E2%29\"$
\n" ); document.write( " $\"-%28-1%2A-1%29\"$
\n" ); document.write( " $\"-%281%29\"$
\n" ); document.write( " $\"-1\"$
\n" ); document.write( " \n" ); document.write( "

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