## orbie 2 years ago Find all real roots of the polynomial. t^4+t^3+2t^2+4t-8

1. mukushla

using rational root theorem for finding possible rational roots will be a good start

2. mukushla

$\pm8 ,\pm4 , \pm2 , \pm1$ are possible rational roots

3. edpinho

i would suggest using ruffini's rule twice the use quadratic formula

4. orbie

Thank you!