Answer :
[tex]2x^3+5x^2-31x-15[/tex]
there is only one change of sign so we have one positive root
and the solution is
[tex](x+0.4564)(x-3.158)(x+5.2)=0[/tex]there is only one change of sign so we have one positive root
and the solution is
[tex](x+0.4564)(x-3.158)(x+5.2)=0[/tex]