document.write( "Question 1181683: Check that (2+i) is a root of $\"+z%5E4+%2B+2z%5E3+-+9z%5E2+-+10z+%2B+50+=+0+\"$ . Find the remaining three roots. \n" ); document.write( "

Algebra.Com's Answer #811578 by ikleyn(52790) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( " D U P L IC A T E\r
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\n" ); document.write( "\n" ); document.write( "Just solved under THIS LINK\r
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\n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/complex/Complex_Numbers.faq.question.1181501.html\r
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