document.write( "Question 745890: Write a polynomial function with rational coefficients so that P(x)=0 has the given roots.
\n" ); document.write( "1.) -4 and 5i
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Algebra.Com's Answer #454050 by tommyt3rd(5050)\"\" \"About 
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complex roots of polynomials with real always come in conjugate pairs so if 5i is a root, then so is -5i.\r
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\n" ); document.write( "\n" ); document.write( "\"p=Q%28x%29%28x-4%29%28x-5i%29%28x%2B5i%29\"\r
\n" ); document.write( "\n" ); document.write( "but the principal polynomial is\r
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\n" ); document.write( "\n" ); document.write( "\"p=%28x-4%29%28x-5i%29%28x%2B5i%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%28x-4%29%28x%5E2%2B25%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"x%28x%5E2%2B25%29-4%28x%5E2%2B25%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E3%2B25x-4x%5E2-100%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E3-4x%5E2%2B25x-100%29\"
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