document.write( "Question 38023: the polynomial function f(x)=x^3+x^2-5x-6 has a zero at x=-2.that implies that x+2 must be a factor of the polynomial. find the other factors by either polynomial long division, or synthetic division...i really dont mind which process you choose, i just need help grasping these concepts. id say im more familiar with polynomial long division. this is part of a take home extra credit assignment i was given, so i dont have any book info, thank you so much! \n" ); document.write( "
Algebra.Com's Answer #23522 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! f(x)=x^3+x^2-5x-6 has a zero at x=-2\r \n" ); document.write( "\n" ); document.write( "Use your long division. \n" ); document.write( "Divide f(x) by x+2 and you will get a \n" ); document.write( "quotient of x^2-x-3 and with a remainder \n" ); document.write( "of zero. \n" ); document.write( "Now solve the quotient for x by using the \n" ); document.write( "quadratic formula, as follows: \n" ); document.write( "x=[1+sqrt(1+12)]/2=[1+-sqrt(13)]/2 \n" ); document.write( "This means the other two factors are: \n" ); document.write( "(x-[(1/2)+(1/2)sqrt13]) and (x-[(1/2)-(1/2)sqrt13]) \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |