document.write( "Question 44393: f(x)=x^5+x^4-2x^3-x^2-x+2 i have to find all real and imaginary zero's, and can you explain the multiplicity of the real zero's for me,thanks. \n" ); document.write( "
Algebra.Com's Answer #29319 by stanbon(75887)\"\" \"About 
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f(x)=x^5+x^4-2x^3-x^2-x+2 i have to find all real and imaginary zero's, and can you explain the multiplicity of the real zero's for me,thanks\r
\n" ); document.write( "\n" ); document.write( "Since the coefficients add up to zero one of the zeroes is x=1.
\n" ); document.write( "Using synthetic division you can find the remaining factor is
\n" ); document.write( "x^4+2x^3 -x-2.
\n" ); document.write( "The coefficients of this also add up to zero so x=1 is a zero again.
\n" ); document.write( "That is called multiplicity two because x=1 is a zero twice.
\n" ); document.write( "Again using synthetic division you can find the remaining factor is
\n" ); document.write( "x^3+3x^2+3x+2.
\n" ); document.write( "x=-2 is a zero for this. (I got this by graphing it.)
\n" ); document.write( "Synthetic says the quotient is x^2+x+1 which has complex zeroes.\r
\n" ); document.write( "\n" ); document.write( "Hope this helps.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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