Question 627306
{{{(t^4 +t^3+2t^2-t-3)/(t+1)}}}
= {{{(t^4 +t^3+2t^2 +2t-3t-3)/(t+1)}}}
= {{{(t^3(t+1) + 2t(t+1) -3(t+1))/(t+1)}}}
= {{{(t+1)(t^3 + 2t -3)/(t+1)}}}
= {{{t^3 + 2t -3}}}