document.write( "Question 1001720: A degree 4 polynomial with integer coefficients has zeros −1, −3i and 1, with 1 a zero of multiplicity 2. If the coefficient of x^4 is 1,
\n" ); document.write( " then the polynomial is
\n" ); document.write( "This is what I did so far
\n" ); document.write( "(x+1)(x-3i)(x-1)^2, but it is being marked as incorrect.
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Algebra.Com's Answer #618809 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "4 polynomial with integer coefficients has zeros:
\n" ); document.write( " \"-1\",and \"1\", with 1 a zero of multiplicity 2,=>\"%28x%2B1%29%5E2\"
\n" ); document.write( "if you know that polynomial is degree \"4\" polynomial, you cannot have \"%28x-1%29%5E2\"; that will make your polynomial a polynomial of degree \"5\" because
\n" ); document.write( "if \"-3i\" is a zero, don't forget that complex zeros always come in pairs; so, you have \"3i\" too\r
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\n" ); document.write( "\n" ); document.write( "\"f%28x%29=%28x%2B1%29%5E2%28x-3i%29%28x%2B3i%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29=%28x%2B1%29%5E2%28x%5E2-%283i%29%5E2%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29=%28x%5E2%2B2x%2B1%29%28x%5E2-9%28i%29%5E2%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29=%28x%5E2%2B2x%2B1%29%28x%5E2-9%28-1%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29=%28x%5E2%2B2x%2B1%29%28x%5E2%2B9%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29=x%5E4%2B2x%5E3%2B1x%5E2%2B9x%5E2%2B18x%2B9\"\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29=x%5E4%2B2x%5E3%2B10x%5E2%2B18x%2B9\"\r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+x%5E4%2B2x%5E3%2B10x%5E2%2B18x%2B9%29+\"\r
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