document.write( "Question 858175: I am struggling to find the complex solutions of $\"+z%5E4=+-81+\"$
\n" ); document.write( "I am assuming that i has a value of 0, I'm not sure how to go about this. \n" ); document.write( "

Algebra.Com's Answer #517088 by Alan3354(69443) $\"\"$ $\"About$

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I am struggling to find the complex solutions of $\"+z%5E4=+-81+\"$
\n" ); document.write( "I am assuming that i has a value of 0, I'm not sure how to go about this.
\n" ); document.write( "-----------
\n" ); document.write( "i <> 0
\n" ); document.write( "i = sqrt(-1)
\n" ); document.write( "----------
\n" ); document.write( " $\"+z%5E4=+-81+=+81cis%28180%29+%2B+n%2A360+\"$ n = 0, 1, 2, 3
\n" ); document.write( " $\"z+=+3cis%2845%29+=+3sqrt%282%29%2F2+%2B+3i%2Asqrt%282%29%2F2\"$ \r
\n" ); document.write( "\n" ); document.write( "3cis(135), 3cis(225), 3cis(315)
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