document.write( "Question 984290: 1.possible roots of polynomial equation x to the third power + 4x +3=0 \n" ); document.write( "
Algebra.Com's Answer #605087 by Fombitz(32388)\"\" \"About 
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You didn't specify a method to use to solve for roots.
\n" ); document.write( "First step is to plot it to see if there are real roots.
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\n" ); document.write( "So there is a root between \"x=-1\" and \"x=0\".
\n" ); document.write( "I'll use Newton's method to find it with a starting value of \"x=-0.5\"
\n" ); document.write( "\"f%28x%29=x%5E3%2B4x%2B3\"
\n" ); document.write( "\"df%2Fdx=3x%5E2%2B4\"
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\n" ); document.write( "\"x=-0.67359\"
\n" ); document.write( "The other two roots are complex.
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