document.write( "Question 969612: Find all real and complex roots. \r
\n" ); document.write( "\n" ); document.write( "x^4-9x^2+20=0\r
\n" ); document.write( "\n" ); document.write( "-The solution set is { }.
\n" ); document.write( "(Use a comma to separate answers as needed. Type an exact answer, using radicals as needed. Type complex answers in the form a + bi.)
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Algebra.Com's Answer #592449 by Alan3354(69443)\"\" \"About 
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Find all real and complex roots. \r
\n" ); document.write( "\n" ); document.write( "x^4-9x^2+20=0
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\n" ); document.write( "\"%28x%5E2+-+5%29%2A%28x%5E2+-+4%29+=+0\"
\n" ); document.write( "Can you do the rest?
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