document.write( "Question 967519: find all the zeroes of the polynomial 2x³+5x²-28x-15 \n" ); document.write( "
Algebra.Com's Answer #591348 by lwsshak3(11628) ![]() You can put this solution on YOUR website! find all the zeroes of the polynomial 2x³+5x²-28x-15 \n" ); document.write( "use rational roots theorem with synthetic division: \n" ); document.write( "..0..|....2.....5......-28.....-15..... \n" ); document.write( "..1..|....2.....7......-21.....-36 \n" ); document.write( "..2..|....2.....9......-11.....-37 \n" ); document.write( "..3..|....2....11.......5........0 (3 is a zero) \n" ); document.write( "f(x)=(x-3)(2x^2+11x+5)=(x-3)(2x+1)(x+5)\r \n" ); document.write( "\n" ); document.write( "zeros are: -5, -1/2, and 3 \n" ); document.write( " |