Question

Akar2 persamaan x^3-2x^2-3x+1=0 adalah x1 x2 x3 maka nilai 1/x1 + 1/x2 1/x3 =……

Answer 1

1/x1 + 1/x2 + 1/x3= ((x2+x3)+(x1+x3)+(x1+x2))/(x1x2x3)=
2(x1+x2+x3)/(x1x2x3)=
2(2)/(-1)=-4