document.write( "Question 1177390: 2x^3+9x^2-4x-18;2x+9 find all zeros \n" ); document.write( "
Algebra.Com's Answer #806331 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "assuming \"2x%2B9+\" is a factor\r
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\n" ); document.write( "\n" ); document.write( "\"%282x%5E3%2B9x%5E2-4x-18%29%2F%282x%2B9%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28%282+x+%2B+9%29+%28x%5E2+-+2%29%29%2F%282x%2B9%29\"\r
\n" ); document.write( "\n" ); document.write( "so,\r
\n" ); document.write( "\n" ); document.write( "\"2x%5E3%2B9x%5E2-4x-18=%28x%5E2+-+2%29%282x%2B9%29\"\r
\n" ); document.write( "\n" ); document.write( "zeros:\r
\n" ); document.write( "\n" ); document.write( "\"%28x%5E2+-+2%29%282x%2B9%29=0\"\r
\n" ); document.write( "\n" ); document.write( "if \"%28x%5E2+-+2%29=0\"=>\"x%5E2+=+2\" => \"x=sqrt%282%29\" or \"x=+-sqrt%282%29+\"
\n" ); document.write( "or\r
\n" ); document.write( "\n" ); document.write( "if \"2x%2B9=0\" =>\"2x=-9\" =>\"x=-9%2F2\"\r
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