document.write( "Question 62484: Solve 3x(to the 3rd)+7x(squared)-22x-8=0, given that negative one third is a solution. \n" ); document.write( "
Algebra.Com's Answer #43226 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Solve 3x(to the 3rd)+7x(squared)-22x-8=0, given that negative one third is a solution. \n" ); document.write( "---------- \n" ); document.write( "3x^3+7x^2-22x-8=0 and x=-1/3 is a zero \n" ); document.write( "If x=-1/3 is a zero: \n" ); document.write( "x-1/3=0 \n" ); document.write( "3x-1 is a factor. \n" ); document.write( "Divide the polynomial by 3x-1 to get: \n" ); document.write( "3x^2+6x-24 \n" ); document.write( "Using the quadratic formula you get: \n" ); document.write( "x=[-6+-sqrt(36-4*3*-24]/-6 \n" ); document.write( "x=[-6+-18]/(-6) \n" ); document.write( "x=-2 or x=4 \n" ); document.write( "-------------- \n" ); document.write( "Final Soluition: \n" ); document.write( "x=-1/3, x=-2, x=4 \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |